diff --git a/.env.example b/.env.example
index 769e28d..aeaa8ea 100644
--- a/.env.example
+++ b/.env.example
@@ -67,12 +67,19 @@ DB_RETRY_DELAY=1000
 DB_LEGACY_HEARTBEAT_ENABLED=true
 # 新热表：heartbeat.heartbeat_events_g4_hot
 DB_G4_HOT_HEARTBEAT_ENABLED=false
+# G5 临时热表：heartbeat.heartbeat_events_g5
+DB_G5_HEARTBEAT_ENABLED=false
 # room_status 写入开关
 DB_ROOM_STATUS_ENABLED=true
+# G5 room_status 写入开关
+DB_G5_ROOM_STATUS_ENABLED=false
 
 # 如无特殊需要，保持默认表名即可
 DB_LEGACY_TABLE=heartbeat.heartbeat_events
 DB_G4_HOT_TABLE=heartbeat.heartbeat_events_g4_hot
+DB_G5_TABLE=heartbeat.heartbeat_events_g5
+DB_ROOM_STATUS_TABLE=room_status.room_status_moment
+DB_G5_ROOM_STATUS_TABLE=room_status.room_status_moment_g5
 
 # =========================
 # Redis 配置
diff --git a/docs/heartbeat_events_g5.sql b/docs/heartbeat_events_g5.sql
new file mode 100644
index 0000000..7e98a2b
--- /dev/null
+++ b/docs/heartbeat_events_g5.sql
@@ -0,0 +1,193 @@
+/*
+ Navicat Premium Dump SQL
+
+ Source Server         : FnOS 80
+ Source Server Type    : PostgreSQL
+ Source Server Version : 150017 (150017)
+ Source Host           : 10.8.8.80:5434
+ Source Catalog        : log_platform
+ Source Schema         : heartbeat
+
+ Target Server Type    : PostgreSQL
+ Target Server Version : 150017 (150017)
+ File Encoding         : 65001
+
+ Date: 10/03/2026 10:18:37
+*/
+
+
+-- ----------------------------
+-- Table structure for heartbeat_events_g5
+-- ----------------------------
+DROP TABLE IF EXISTS "heartbeat"."heartbeat_events_g5";
+CREATE TABLE "heartbeat"."heartbeat_events_g5" (
+  "guid" int4 NOT NULL DEFAULT nextval('"heartbeat".heartbeat_events_g5_guid_seq'::regclass),
+  "ts_ms" int8 NOT NULL,
+  "hotel_id" int2 NOT NULL,
+  "room_id" varchar(50) COLLATE "pg_catalog"."default" NOT NULL,
+  "device_id" varchar(64) COLLATE "pg_catalog"."default" NOT NULL,
+  "ip" varchar(21) COLLATE "pg_catalog"."default" NOT NULL,
+  "power_state" int2 NOT NULL,
+  "guest_type" int2 NOT NULL,
+  "cardless_state" int2 NOT NULL,
+  "service_mask" int8,
+  "pms_state" int2 NOT NULL,
+  "carbon_state" int2 NOT NULL,
+  "device_count" int2 NOT NULL,
+  "comm_seq" int4 NOT NULL,
+  "elec_address" _text COLLATE "pg_catalog"."default",
+  "air_address" _text COLLATE "pg_catalog"."default",
+  "voltage" _float8,
+  "ampere" _float8,
+  "power" _float8,
+  "phase" _text COLLATE "pg_catalog"."default",
+  "energy" _float8,
+  "sum_energy" _float8,
+  "state" _int2,
+  "model" _int2,
+  "speed" _int2,
+  "set_temp" _int2,
+  "now_temp" _int2,
+  "solenoid_valve" _int2,
+  "extra" jsonb,
+  "write_ts_ms" int8 NOT NULL DEFAULT ((EXTRACT(epoch FROM clock_timestamp()) * (1000)::numeric))::bigint,
+  "insert_card" int2,
+  "bright_g" int2,
+  "version" int2,
+  "svc_01" bool,
+  "svc_02" bool,
+  "svc_03" bool,
+  "svc_04" bool,
+  "svc_05" bool,
+  "svc_06" bool,
+  "svc_07" bool,
+  "svc_08" bool,
+  "svc_09" bool,
+  "svc_10" bool,
+  "svc_11" bool,
+  "svc_12" bool,
+  "svc_13" bool,
+  "svc_14" bool,
+  "svc_15" bool,
+  "svc_16" bool,
+  "svc_17" bool,
+  "svc_18" bool,
+  "svc_19" bool,
+  "svc_20" bool,
+  "svc_21" bool,
+  "svc_22" bool,
+  "svc_23" bool,
+  "svc_24" bool,
+  "svc_25" bool,
+  "svc_26" bool,
+  "svc_27" bool,
+  "svc_28" bool,
+  "svc_29" bool,
+  "svc_30" bool,
+  "svc_31" bool,
+  "svc_32" bool,
+  "svc_33" bool,
+  "svc_34" bool,
+  "svc_35" bool,
+  "svc_36" bool,
+  "svc_37" bool,
+  "svc_38" bool,
+  "svc_39" bool,
+  "svc_40" bool,
+  "svc_41" bool,
+  "svc_42" bool,
+  "svc_43" bool,
+  "svc_44" bool,
+  "svc_45" bool,
+  "svc_46" bool,
+  "svc_47" bool,
+  "svc_48" bool,
+  "svc_49" bool,
+  "svc_50" bool,
+  "svc_51" bool,
+  "svc_52" bool,
+  "svc_53" bool,
+  "svc_54" bool,
+  "svc_55" bool,
+  "svc_56" bool,
+  "svc_57" bool,
+  "svc_58" bool,
+  "svc_59" bool,
+  "svc_60" bool,
+  "svc_61" bool,
+  "svc_62" bool,
+  "svc_63" bool,
+  "svc_64" bool,
+  "air_address_1" text COLLATE "pg_catalog"."default",
+  "air_address_2" text COLLATE "pg_catalog"."default",
+  "air_address_residual" _text COLLATE "pg_catalog"."default",
+  "state_1" int2,
+  "state_2" int2,
+  "state_residual" _int2,
+  "model_1" int2,
+  "model_2" int2,
+  "model_residual" _int2,
+  "speed_1" int2,
+  "speed_2" int2,
+  "speed_residual" _int2,
+  "set_temp_1" int2,
+  "set_temp_2" int2,
+  "set_temp_residual" _int2,
+  "now_temp_1" int2,
+  "now_temp_2" int2,
+  "now_temp_residual" _int2,
+  "solenoid_valve_1" int2,
+  "solenoid_valve_2" int2,
+  "solenoid_valve_residual" _int2,
+  "elec_address_1" text COLLATE "pg_catalog"."default",
+  "elec_address_2" text COLLATE "pg_catalog"."default",
+  "elec_address_residual" _text COLLATE "pg_catalog"."default",
+  "voltage_1" float8,
+  "voltage_2" float8,
+  "voltage_residual" _float8,
+  "ampere_1" float8,
+  "ampere_2" float8,
+  "ampere_residual" _float8,
+  "power_1" float8,
+  "power_2" float8,
+  "power_residual" _float8,
+  "phase_1" text COLLATE "pg_catalog"."default",
+  "phase_2" text COLLATE "pg_catalog"."default",
+  "phase_residual" _text COLLATE "pg_catalog"."default",
+  "energy_1" float8,
+  "energy_2" float8,
+  "energy_residual" _float8,
+  "sum_energy_1" float8,
+  "sum_energy_2" float8,
+  "sum_energy_residual" _float8,
+  "power_carbon_on" float8,
+  "power_carbon_off" float8,
+  "power_person_exist" float8,
+  "power_person_left" float8
+)
+TABLESPACE "ts_hot"
+;
+
+-- ----------------------------
+-- Indexes structure for table heartbeat_events_g5
+-- ----------------------------
+CREATE INDEX "heartbeat_events_g5_ts_ms_idx" ON "heartbeat"."heartbeat_events_g5" USING btree (
+  "ts_ms" "pg_catalog"."int8_ops" DESC NULLS FIRST
+) TABLESPACE "ts_hot";
+CREATE INDEX "idx_hb_g5_device_ts" ON "heartbeat"."heartbeat_events_g5" USING btree (
+  "device_id" COLLATE "pg_catalog"."default" "pg_catalog"."text_ops" ASC NULLS LAST,
+  "ts_ms" "pg_catalog"."int8_ops" DESC NULLS FIRST
+);
+CREATE INDEX "idx_hb_g5_room_query" ON "heartbeat"."heartbeat_events_g5" USING btree (
+  "hotel_id" "pg_catalog"."int2_ops" ASC NULLS LAST,
+  "room_id" COLLATE "pg_catalog"."default" "pg_catalog"."text_ops" ASC NULLS LAST,
+  "ts_ms" "pg_catalog"."int8_ops" DESC NULLS FIRST
+);
+CREATE INDEX "idx_hb_g5_ts_ms" ON "heartbeat"."heartbeat_events_g5" USING btree (
+  "ts_ms" "pg_catalog"."int8_ops" DESC NULLS FIRST
+);
+
+-- ----------------------------
+-- Primary Key structure for table heartbeat_events_g5
+-- ----------------------------
+ALTER TABLE "heartbeat"."heartbeat_events_g5" ADD CONSTRAINT "heartbeat_events_g5_pkey" PRIMARY KEY ("ts_ms", "guid");
diff --git a/docs/room_status_moment_g5.sql b/docs/room_status_moment_g5.sql
new file mode 100644
index 0000000..06d8d0d
--- /dev/null
+++ b/docs/room_status_moment_g5.sql
@@ -0,0 +1,88 @@
+/*
+ Navicat Premium Dump SQL
+
+ Source Server         : FnOS 80
+ Source Server Type    : PostgreSQL
+ Source Server Version : 150017 (150017)
+ Source Host           : 10.8.8.80:5434
+ Source Catalog        : log_platform
+ Source Schema         : room_status
+
+ Target Server Type    : PostgreSQL
+ Target Server Version : 150017 (150017)
+ File Encoding         : 65001
+
+ Date: 10/03/2026 10:32:13
+*/
+
+
+-- ----------------------------
+-- Table structure for room_status_moment_g5
+-- ----------------------------
+DROP TABLE IF EXISTS "room_status"."room_status_moment_g5";
+CREATE TABLE "room_status"."room_status_moment_g5" (
+  "hotel_id" int2 NOT NULL,
+  "room_id" text COLLATE "pg_catalog"."default" NOT NULL,
+  "device_id" text COLLATE "pg_catalog"."default" NOT NULL,
+  "ts_ms" int8 NOT NULL DEFAULT ((EXTRACT(epoch FROM clock_timestamp()) * (1000)::numeric))::bigint,
+  "sys_lock_status" int2,
+  "online_status" int2,
+  "launcher_version" text COLLATE "pg_catalog"."default",
+  "app_version" text COLLATE "pg_catalog"."default",
+  "config_version" text COLLATE "pg_catalog"."default",
+  "register_ts_ms" int8,
+  "upgrade_ts_ms" int8,
+  "config_ts_ms" int8,
+  "ip" text COLLATE "pg_catalog"."default",
+  "pms_status" int2,
+  "power_state" int2,
+  "cardless_state" int2,
+  "service_mask" int8,
+  "insert_card" int2,
+  "bright_g" int2,
+  "agreement_ver" text COLLATE "pg_catalog"."default",
+  "air_address" _text COLLATE "pg_catalog"."default",
+  "air_state" _int2,
+  "air_model" _int2,
+  "air_speed" _int2,
+  "air_set_temp" _int2,
+  "air_now_temp" _int2,
+  "air_solenoid_valve" _int2,
+  "elec_address" _text COLLATE "pg_catalog"."default",
+  "elec_voltage" _float8,
+  "elec_ampere" _float8,
+  "elec_power" _float8,
+  "elec_phase" _float8,
+  "elec_energy" _float8,
+  "elec_sum_energy" _float8,
+  "carbon_state" int2,
+  "dev_loops" jsonb,
+  "energy_carbon_sum" float8,
+  "energy_nocard_sum" float8,
+  "external_device" jsonb DEFAULT '{}'::jsonb,
+  "faulty_device_count" jsonb DEFAULT '{}'::jsonb
+)
+WITH (fillfactor=90)
+TABLESPACE "ts_hot"
+;
+
+-- ----------------------------
+-- Indexes structure for table room_status_moment_g5
+-- ----------------------------
+CREATE INDEX "idx_rsm_g5_dashboard_query" ON "room_status"."room_status_moment_g5" USING btree (
+  "hotel_id" "pg_catalog"."int2_ops" ASC NULLS LAST,
+  "online_status" "pg_catalog"."int2_ops" ASC NULLS LAST,
+  "power_state" "pg_catalog"."int2_ops" ASC NULLS LAST
+);
+
+-- ----------------------------
+-- Triggers structure for table room_status_moment_g5
+-- ----------------------------
+CREATE TRIGGER "trg_update_rsm_ts_ms" BEFORE UPDATE ON "room_status"."room_status_moment_g5"
+FOR EACH ROW
+EXECUTE PROCEDURE "room_status"."update_ts_ms_g5"();
+
+-- ----------------------------
+-- Primary Key structure for table room_status_moment_g5
+-- ----------------------------
+ALTER TABLE "room_status"."room_status_moment_g5" ADD CONSTRAINT "room_status_moment_g5_pkey" PRIMARY KEY ("hotel_id", "room_id");
diff --git a/openspec/changes/add-g5-independent-write/proposal.md b/openspec/changes/add-g5-independent-write/proposal.md
new file mode 100644
index 0000000..edf4f2c
--- /dev/null
+++ b/openspec/changes/add-g5-independent-write/proposal.md
@@ -0,0 +1,15 @@
+# Change: add g5 independent write
+
+## Why
+当前服务已经支持 legacy 与 G4 热表双写，但需要在不影响现有主链路的前提下，再额外向一个临时 G5 库独立写入同构数据，便于过渡期联调与验证。
+
+## What Changes
+- 新增 G5 独立数据库连接配置与可关闭的写入开关
+- 在现有 legacy/G4 写入成功路径后，追加独立的 G5 写入流程
+- G5 使用与 G4 相同的数据结构映射，但不写入 guid，由数据库自生成 int4 guid
+- room_status 新增 G5 独立 upsert 写入路径，并保留旧表与 G5 表的独立开关
+- 新增 G5 写入统计与启动摘要输出
+
+## Impact
+- Affected specs: db, processor
+- Affected code: src/config/config.js, src/index.js, src/db/databaseManager.js, src/processor/heartbeatProcessor.js, src/stats/statsManager.js, test/*.test.js
\ No newline at end of file
diff --git a/openspec/changes/add-g5-independent-write/specs/db/spec.md b/openspec/changes/add-g5-independent-write/specs/db/spec.md
new file mode 100644
index 0000000..6ecdc62
--- /dev/null
+++ b/openspec/changes/add-g5-independent-write/specs/db/spec.md
@@ -0,0 +1,63 @@
+## MODIFIED Requirements
+### Requirement: 双明细独立编排
+系统 MUST 提供多目标明细写入编排能力，按启动配置分别控制旧表、G4 热表和临时 G5 热表的写入，各路写入结果相互独立。
+
+#### Scenario: 旧表、G4 与 G5 可独立组合
+- **WHEN** `legacyHeartbeatEnabled`、`g4HotHeartbeatEnabled`、`g5HeartbeatEnabled` 任意组合启停
+- **THEN** 系统应只对开启的目标执行写入
+- **AND** 任一路写入失败都不应阻塞其他已开启目标的写入
+
+#### Scenario: G5 写入不影响主链路暂停判定
+- **WHEN** G5 临时库写入失败或连接异常
+- **THEN** 系统不应因此暂停 legacy/G4 主链路消费
+- **AND** 应记录日志与统计以便排查
+
+### Requirement: 写入目标启动配置
+系统 MUST 通过启动配置（环境变量）分别控制旧表、G4 热表、临时 G5 热表和 room_status 的写入开关与目标表名。
+
+#### Scenario: 读取 G5 独立连接与表配置
+- **WHEN** 系统启动时
+- **THEN** 应读取 `DB_G5_HEARTBEAT_ENABLED` 作为 G5 写入开关
+- **AND** 应读取 `DB_G5_TABLE` 作为 G5 目标表名，默认 `heartbeat.heartbeat_events_g5`
+- **AND** 应读取 `POSTGRES_HOST_G5`、`POSTGRES_PORT_G5`、`POSTGRES_DATABASE_G5`、`POSTGRES_USER_G5`、`POSTGRES_PASSWORD_G5`、`POSTGRES_IDLE_TIMEOUT_MS_G5` 作为 G5 独立连接参数
+
+### Requirement: G5 热表独立写入能力
+系统 MUST 支持向 `heartbeat.heartbeat_events_g5` 执行批量 COPY 写入，并与 G4 热表共享同一套字段展开逻辑。
+
+#### Scenario: G5 写入复用 G4 字段映射
+- **WHEN** `g5HeartbeatEnabled=true` 且有一批心跳数据待写入
+- **THEN** 系统应使用与 G4 热表一致的字段展开规则写入 `heartbeat.heartbeat_events_g5`
+- **AND** `service_mask` 应展开为 `svc_01` 至 `svc_64`
+- **AND** 电力与空调数组应展开为 `_1`、`_2`、`_residual` 列
+
+#### Scenario: G5 guid 由数据库生成
+- **WHEN** 系统写入 `heartbeat.heartbeat_events_g5`
+- **THEN** 系统不应为 `guid` 字段赋值
+- **AND** 应依赖数据库默认值生成 `int4` 类型 guid
+
+#### Scenario: G5 原始数组列固定写空
+- **WHEN** 系统写入 `heartbeat.heartbeat_events_g5`
+- **THEN** `service_mask`、`elec_address`、`air_address`、`voltage`、`ampere`、`power`、`phase`、`energy`、`sum_energy`、`state`、`model`、`speed`、`set_temp`、`now_temp`、`solenoid_valve`、`extra` 应统一写入 `null`
+- **AND** `_1`、`_2`、`_residual` 展开列仍应按来源数据正常写入
+
+### Requirement: room_status 新旧双表独立 upsert
+系统 MUST 支持将 room_status 同时写入旧表与 G5 表，并允许分别开关。
+
+#### Scenario: 旧表与 G5 表可独立开关
+- **WHEN** `DB_ROOM_STATUS_ENABLED` 与 `DB_G5_ROOM_STATUS_ENABLED` 任意组合启停
+- **THEN** 系统应仅对开启的 room_status 目标表执行 upsert
+- **AND** 任一 room_status 目标失败不应阻塞另一目标
+
+#### Scenario: room_status 全盘使用 ON CONFLICT DO UPDATE
+- **WHEN** 系统写入旧 room_status 表或 G5 room_status 表
+- **THEN** 系统应统一使用 `INSERT ... ON CONFLICT DO UPDATE`
+- **AND** 不应退回为单独的 `INSERT` 或 `UPDATE` 路径
+
+#### Scenario: room_status SQL 不更新 ts_ms
+- **WHEN** 系统执行旧 room_status 或 G5 room_status 的 upsert SQL
+- **THEN** `DO UPDATE SET` 子句中不应包含 `ts_ms = EXCLUDED.ts_ms`
+
+#### Scenario: G5 room_status 使用 hotel_id 与 room_id 冲突键
+- **WHEN** 系统写入 `room_status.room_status_moment_g5`
+- **THEN** 应使用 `(hotel_id, room_id)` 作为 `ON CONFLICT` 的冲突键
+- **AND** 应将 `device_id` 作为普通可更新列写入
\ No newline at end of file
diff --git a/openspec/changes/add-g5-independent-write/specs/processor/spec.md b/openspec/changes/add-g5-independent-write/specs/processor/spec.md
new file mode 100644
index 0000000..e30bbc5
--- /dev/null
+++ b/openspec/changes/add-g5-independent-write/specs/processor/spec.md
@@ -0,0 +1,19 @@
+## MODIFIED Requirements
+### Requirement: 按 sink 维度的统计与监控
+系统 MUST 按写入目标维度分别统计成功数、失败数与降级事件。
+
+#### Scenario: legacy、g4Hot 与 g5 分别统计
+- **WHEN** 系统完成一批次的多目标写入编排
+- **THEN** 应分别统计 legacy 写入成功数、失败数
+- **AND** 应分别统计 g4Hot 写入成功数、失败数
+- **AND** 应分别统计 g5 写入成功数、失败数
+- **AND** 统计项应在 Redis 控制台输出或 stats 汇总中可见
+
+### Requirement: room_status 新旧双表独立执行
+系统 MUST 在批次处理中独立执行旧 room_status 与 G5 room_status 的 upsert，不依赖任意明细写入结果。
+
+#### Scenario: 两个 room_status 目标独立执行
+- **WHEN** 一批心跳数据完成验证与转换
+- **THEN** 只要 `DB_ROOM_STATUS_ENABLED=true` 就应执行旧 room_status upsert
+- **AND** 只要 `DB_G5_ROOM_STATUS_ENABLED=true` 就应执行 G5 room_status upsert
+- **AND** 任一路 room_status 写入失败都不应阻塞另一条 room_status 路径或主处理流程
\ No newline at end of file
diff --git a/openspec/changes/add-g5-independent-write/tasks.md b/openspec/changes/add-g5-independent-write/tasks.md
new file mode 100644
index 0000000..2c3576d
--- /dev/null
+++ b/openspec/changes/add-g5-independent-write/tasks.md
@@ -0,0 +1,6 @@
+## 1. Implementation
+- [x] 1.1 增加 G5 独立连接与开关配置读取
+- [x] 1.2 增加 G5 独立写库实现，复用 G4 热表映射逻辑并省略 guid 写入
+- [x] 1.3 将 G5 写入接入现有批处理流程，保持与 legacy/G4/room_status 相互独立
+- [x] 1.4 增加 G5 统计、启动摘要与测试覆盖
+- [x] 1.5 增加旧 room_status 与 G5 room_status 的独立 ON CONFLICT DO UPDATE 写入路径
\ No newline at end of file
diff --git a/src/config/config.example.js b/src/config/config.example.js
index bf4e77a..0f5a048 100644
--- a/src/config/config.example.js
+++ b/src/config/config.example.js
@@ -54,9 +54,28 @@ export default {
     retryDelay: 1000, // 重试延迟
     legacyHeartbeatEnabled: true,     // 旧明细表写入开关
     g4HotHeartbeatEnabled: false,     // 新明细表(g4_hot)写入开关
+    g5HeartbeatEnabled: (env.DB_G5_HEARTBEAT_ENABLED ?? 'false') === 'true', // 临时 G5 库写入开关
     roomStatusEnabled: true,          // room_status 写入开关
     legacyTable: 'heartbeat.heartbeat_events',
     g4HotTable: 'heartbeat.heartbeat_events_g4_hot',
+    roomStatusTable: env.DB_ROOM_STATUS_TABLE ?? 'room_status.room_status_moment',
+  },
+
+  g5db: {
+    enabled: (env.DB_G5_HEARTBEAT_ENABLED ?? 'false') === 'true',
+    host: env.POSTGRES_HOST_G5 ?? '10.8.8.80',
+    port: Number(env.POSTGRES_PORT_G5 ?? 5434),
+    user: env.POSTGRES_USER_G5 ?? 'log_admin',
+    password: env.POSTGRES_PASSWORD_G5 ?? 'YourActualStrongPasswordForG5!',
+    database: env.POSTGRES_DATABASE_G5 ?? 'log_platform',
+    maxConnections: Number(env.POSTGRES_MAX_CONNECTIONS_G5 ?? 1),
+    idleTimeoutMillis: Number(env.POSTGRES_IDLE_TIMEOUT_MS_G5 ?? 30000),
+    retryAttempts: Number(env.DB_G5_RETRY_ATTEMPTS ?? 3),
+    retryDelay: Number(env.DB_G5_RETRY_DELAY ?? 1000),
+    g5HeartbeatEnabled: (env.DB_G5_HEARTBEAT_ENABLED ?? 'false') === 'true',
+    g5Table: env.DB_G5_TABLE ?? 'heartbeat.heartbeat_events_g5',
+    roomStatusEnabled: (env.DB_G5_ROOM_STATUS_ENABLED ?? env.DB_G5_HEARTBEAT_ENABLED ?? 'false') === 'true',
+    roomStatusTable: env.DB_G5_ROOM_STATUS_TABLE ?? 'room_status.room_status_moment_g5',
   },
 
   // 日志配置
diff --git a/src/db/databaseManager.js b/src/db/databaseManager.js
index d069c14..bbb6944 100644
--- a/src/db/databaseManager.js
+++ b/src/db/databaseManager.js
@@ -184,6 +184,14 @@ class DatabaseManager {
   // ---- 新表 G4 Hot 列定义 ----
 
   _getG4HotColumns() {
+    return this._getExpandedHotColumns({ includeGuid: true });
+  }
+
+  _getG5Columns() {
+    return this._getExpandedHotColumns({ includeGuid: false });
+  }
+
+  _getExpandedHotColumns({ includeGuid }) {
     const base = [
       'ts_ms', 'write_ts_ms', 'hotel_id', 'room_id', 'device_id', 'ip',
       'power_state', 'guest_type', 'cardless_state', 'service_mask',
@@ -213,8 +221,9 @@ class DatabaseManager {
       'sum_energy_1', 'sum_energy_2', 'sum_energy_residual',
     ];
     const power = ['power_carbon_on', 'power_carbon_off', 'power_person_exist', 'power_person_left'];
-    const tail = ['guid'];
-    return [...base, ...svc, ...airUnpacked, ...elecUnpacked, ...power, ...tail];
+    return includeGuid
+      ? [...base, ...svc, ...airUnpacked, ...elecUnpacked, ...power, 'guid']
+      : [...base, ...svc, ...airUnpacked, ...elecUnpacked, ...power];
   }
 
   _unpackArrElement(arr, idx) {
@@ -228,6 +237,14 @@ class DatabaseManager {
   }
 
   _g4HotToRowValues(e) {
+    return this._expandedHotToRowValues(e, { includeGuid: true, nullifyArrayColumns: false, nullifyG5BaseColumns: false });
+  }
+
+  _g5ToRowValues(e) {
+    return this._expandedHotToRowValues(e, { includeGuid: false, nullifyArrayColumns: true, nullifyG5BaseColumns: true });
+  }
+
+  _expandedHotToRowValues(e, { includeGuid, nullifyArrayColumns, nullifyG5BaseColumns }) {
     const values = [
       e.ts_ms,
       e.write_ts_ms ?? Date.now(),
@@ -238,7 +255,7 @@ class DatabaseManager {
       e.power_state,
       e.guest_type,
       e.cardless_state,
-      e.service_mask,
+      nullifyG5BaseColumns ? null : e.service_mask,
       e.pms_state,
       e.carbon_state,
       e.device_count,
@@ -246,21 +263,21 @@ class DatabaseManager {
       e.insert_card ?? null,
       (e.bright_g === -1 || e.bright_g === '-1') ? null : (e.bright_g ?? null),
       e.version ?? null,
-      Array.isArray(e.elec_address) ? e.elec_address : null,
-      Array.isArray(e.air_address) ? e.air_address : null,
-      Array.isArray(e.voltage) ? e.voltage : null,
-      Array.isArray(e.ampere) ? e.ampere : null,
-      Array.isArray(e.power) ? e.power : null,
-      Array.isArray(e.phase) ? e.phase : null,
-      Array.isArray(e.energy) ? e.energy : null,
-      Array.isArray(e.sum_energy) ? e.sum_energy : null,
-      Array.isArray(e.state) ? e.state : null,
-      Array.isArray(e.model) ? e.model : null,
-      Array.isArray(e.speed) ? e.speed : null,
-      Array.isArray(e.set_temp) ? e.set_temp : null,
-      Array.isArray(e.now_temp) ? e.now_temp : null,
-      Array.isArray(e.solenoid_valve) ? e.solenoid_valve : null,
-      e.extra ?? null,
+      nullifyArrayColumns ? null : (Array.isArray(e.elec_address) ? e.elec_address : null),
+      nullifyArrayColumns ? null : (Array.isArray(e.air_address) ? e.air_address : null),
+      nullifyArrayColumns ? null : (Array.isArray(e.voltage) ? e.voltage : null),
+      nullifyArrayColumns ? null : (Array.isArray(e.ampere) ? e.ampere : null),
+      nullifyArrayColumns ? null : (Array.isArray(e.power) ? e.power : null),
+      nullifyArrayColumns ? null : (Array.isArray(e.phase) ? e.phase : null),
+      nullifyArrayColumns ? null : (Array.isArray(e.energy) ? e.energy : null),
+      nullifyArrayColumns ? null : (Array.isArray(e.sum_energy) ? e.sum_energy : null),
+      nullifyArrayColumns ? null : (Array.isArray(e.state) ? e.state : null),
+      nullifyArrayColumns ? null : (Array.isArray(e.model) ? e.model : null),
+      nullifyArrayColumns ? null : (Array.isArray(e.speed) ? e.speed : null),
+      nullifyArrayColumns ? null : (Array.isArray(e.set_temp) ? e.set_temp : null),
+      nullifyArrayColumns ? null : (Array.isArray(e.now_temp) ? e.now_temp : null),
+      nullifyArrayColumns ? null : (Array.isArray(e.solenoid_valve) ? e.solenoid_valve : null),
+      nullifyG5BaseColumns ? null : (e.extra ?? null),
     ];
 
     // svc_01 .. svc_64 布尔展开
@@ -305,7 +322,9 @@ class DatabaseManager {
     values.push(null);
     values.push(null);
 
-    values.push(this._normalizeGuid(e.guid));
+    if (includeGuid) {
+      values.push(this._normalizeGuid(e.guid));
+    }
 
     return values;
   }
@@ -456,6 +475,24 @@ class DatabaseManager {
     };
   }
 
+  async insertHeartbeatEventsG5(events) {
+    if (!Array.isArray(events)) events = [events];
+    if (events.length === 0) {
+      return { enabled: false, success: true, insertedCount: 0, failedRecords: [], error: null, isConnectionError: false, batchError: null };
+    }
+
+    const result = await this._insertEventsToTarget(events, {
+      tableName: this.config.g5Table ?? 'heartbeat.heartbeat_events_g5',
+      columns: this._getG5Columns(),
+      toRowValues: (e) => this._g5ToRowValues(e),
+      ensurePartitions: false,
+      logPrefix: '[g5]',
+      missingPartitionTable: null,
+    });
+
+    return { ...result, enabled: true };
+  }
+
   // v2 明细表写入（向后兼容封装，仅旧表，抛出连接错误）
   async insertHeartbeatEvents(events) {
     if (!Array.isArray(events)) events = [events];
@@ -683,34 +720,8 @@ class DatabaseManager {
     }
   }
 
-
-
-  // 同步更新 room_status.room_status_moment 表
-  // 使用 INSERT ... ON CONFLICT ... DO UPDATE 实现 upsert
-  async upsertRoomStatus(events) {
-    if (!Array.isArray(events)) {
-      events = [events];
-    }
-    if (events.length === 0) return { insertedCount: 0, updatedCount: 0 };
-
-    // 批次内去重：按 (hotel_id, room_id, device_id) 分组，只保留 ts_ms 最大的一条
-    // 原因：PostgreSQL ON CONFLICT 不允许同一语句中多次更新同一行
-    const uniqueEventsMap = new Map();
-    for (const e of events) {
-      if (!e.hotel_id || !e.room_id || !e.device_id) continue;
-      const key = `${e.hotel_id}_${e.room_id}_${e.device_id}`;
-      const existing = uniqueEventsMap.get(key);
-      // 如果没有记录，或者当前记录时间更新，则覆盖
-      if (!existing || (BigInt(e.ts_ms || 0) > BigInt(existing.ts_ms || 0))) {
-        uniqueEventsMap.set(key, e);
-      }
-    }
-    const uniqueEvents = Array.from(uniqueEventsMap.values());
-    if (uniqueEvents.length === 0) return { insertedCount: 0, updatedCount: 0 };
-
-    // 字段映射：心跳字段 -> room_status 字段
-    // 注意：只更新心跳包里有的字段
-    const columns = [
+  _getRoomStatusBaseColumns() {
+    return [
       'ts_ms',
       'hotel_id',
       'room_id',
@@ -723,7 +734,7 @@ class DatabaseManager {
       'insert_card',
       'carbon_state',
       'bright_g',
-      'agreement_ver', // map from version
+      'agreement_ver',
       'air_address',
       'air_state',
       'air_model',
@@ -739,77 +750,103 @@ class DatabaseManager {
       'elec_energy',
       'elec_sum_energy',
     ];
+  }
 
-    const toRowValues = (e) => [
-      e.ts_ms,
-      e.hotel_id,
-      e.room_id,
-      e.device_id,
-      e.ip,
-      e.pms_state, // pms_status
-      e.power_state,
-      e.cardless_state,
-      e.service_mask,
-      e.insert_card ?? null,
-      e.carbon_state,
-      e.bright_g === -1 ? null : (e.bright_g ?? null),
-      e.version ?? null, // agreement_ver
-      Array.isArray(e.air_address) ? e.air_address : null,
-      Array.isArray(e.state) ? e.state : null, // air_state
-      Array.isArray(e.model) ? e.model : null, // air_model
-      Array.isArray(e.speed) ? e.speed : null, // air_speed
-      Array.isArray(e.set_temp) ? e.set_temp : null, // air_set_temp
-      Array.isArray(e.now_temp) ? e.now_temp : null, // air_now_temp
-      Array.isArray(e.solenoid_valve) ? e.solenoid_valve : null, // air_solenoid_valve
-      Array.isArray(e.elec_address) ? e.elec_address : null,
-      Array.isArray(e.voltage) ? e.voltage : null, // elec_voltage
-      Array.isArray(e.ampere) ? e.ampere : null, // elec_ampere
-      Array.isArray(e.power) ? e.power : null, // elec_power
-      Array.isArray(e.phase) ? e.phase : null, // elec_phase
-      Array.isArray(e.energy) ? e.energy : null, // elec_energy
-      Array.isArray(e.sum_energy) ? e.sum_energy : null, // elec_sum_energy
+  _roomStatusToRowValues(event) {
+    return [
+      event.ts_ms,
+      event.hotel_id,
+      event.room_id,
+      event.device_id,
+      event.ip,
+      event.pms_state,
+      event.power_state,
+      event.cardless_state,
+      event.service_mask,
+      event.insert_card ?? null,
+      event.carbon_state,
+      event.bright_g === -1 ? null : (event.bright_g ?? null),
+      event.version === null || event.version === undefined ? null : String(event.version),
+      Array.isArray(event.air_address) ? event.air_address : null,
+      Array.isArray(event.state) ? event.state : null,
+      Array.isArray(event.model) ? event.model : null,
+      Array.isArray(event.speed) ? event.speed : null,
+      Array.isArray(event.set_temp) ? event.set_temp : null,
+      Array.isArray(event.now_temp) ? event.now_temp : null,
+      Array.isArray(event.solenoid_valve) ? event.solenoid_valve : null,
+      Array.isArray(event.elec_address) ? event.elec_address : null,
+      Array.isArray(event.voltage) ? event.voltage : null,
+      Array.isArray(event.ampere) ? event.ampere : null,
+      Array.isArray(event.power) ? event.power : null,
+      Array.isArray(event.phase) ? event.phase : null,
+      Array.isArray(event.energy) ? event.energy : null,
+      Array.isArray(event.sum_energy) ? event.sum_energy : null,
     ];
+  }
 
-    // 构建 UPDATE SET 子句（排除主键和 guid）
-    // 使用 EXCLUDED.col 引用新值
-    // 使用 IS DISTINCT FROM 避免无意义更新
-    const updateColumns = columns.filter(c => !['hotel_id', 'room_id', 'device_id'].includes(c));
-    const updateSet = updateColumns.map(col => `${col} = EXCLUDED.${col}`).join(', ');
+  _buildRoomStatusUpsertQuery(events, target) {
+    const { tableName, conflictColumns, includeGuid, tableRef } = target;
+    const columns = this._getRoomStatusBaseColumns();
+    const uniqueEventsMap = new Map();
 
-    // 构建 WHERE 子句：仅当至少一个字段发生变化，且时间戳未回退时才更新
-    // 注意：room_status.room_status_moment.ts_ms 是 bigint，EXCLUDED.ts_ms 也是 bigint
-    const whereConditions = updateColumns.map(col => `room_status.room_status_moment.${col} IS DISTINCT FROM EXCLUDED.${col}`).join(' OR ');
+    for (const event of events) {
+      const keyValues = conflictColumns.map((column) => event?.[column]);
+      if (keyValues.some((value) => value === undefined || value === null || value === '')) continue;
+      const key = keyValues.join('_');
+      const existing = uniqueEventsMap.get(key);
+      if (!existing || BigInt(event.ts_ms || 0) > BigInt(existing.ts_ms || 0)) {
+        uniqueEventsMap.set(key, event);
+      }
+    }
+
+    const uniqueEvents = Array.from(uniqueEventsMap.values());
+    if (uniqueEvents.length === 0) {
+      return { sql: null, values: [], uniqueEvents: [] };
+    }
+
+    const allColumns = includeGuid ? [...columns, 'guid'] : [...columns];
+    const updateColumns = columns.filter((column) => !['ts_ms', ...conflictColumns].includes(column));
+    const updateSet = updateColumns.map((column) => `${column} = EXCLUDED.${column}`).join(', ');
+    const whereConditions = updateColumns.map((column) => `${tableRef}.${column} IS DISTINCT FROM EXCLUDED.${column}`).join(' OR ');
 
-    // 生成批量插入 SQL
-    // 注意：ON CONFLICT (hotel_id, room_id, device_id) 依赖于唯一索引 idx_room_status_unique_device
     const values = [];
-    const placeholders = uniqueEvents.map((e, idx) => {
-      const rowVals = toRowValues(e);
-      values.push(...rowVals);
-      // 额外插入 gen_random_uuid() 作为 guid
-      const p = rowVals.map((_, i) => `$${idx * rowVals.length + i + 1}`).join(', ');
-      return `(${p}, gen_random_uuid())`;
+    const placeholders = uniqueEvents.map((event, eventIndex) => {
+      const rowValues = this._roomStatusToRowValues(event);
+      values.push(...rowValues);
+      const start = eventIndex * rowValues.length;
+      const params = rowValues.map((_, valueIndex) => `$${start + valueIndex + 1}`).join(', ');
+      return includeGuid ? `(${params}, gen_random_uuid())` : `(${params})`;
     }).join(', ');
 
-    const allCols = [...columns, 'guid'].join(', ');
-
     const sql = `
-      INSERT INTO room_status.room_status_moment (${allCols})
+      INSERT INTO ${tableName} (${allColumns.join(', ')})
       VALUES ${placeholders}
-      ON CONFLICT (hotel_id, room_id, device_id)
+      ON CONFLICT (${conflictColumns.join(', ')})
       DO UPDATE SET
         ${updateSet}
-      WHERE 
-        room_status.room_status_moment.ts_ms <= EXCLUDED.ts_ms
+      WHERE
+        ${tableRef}.ts_ms <= EXCLUDED.ts_ms
         AND (${whereConditions})
     `;
 
+    return { sql, values, uniqueEvents };
+  }
+
+  async _upsertRoomStatusToTarget(events, target) {
+    if (!Array.isArray(events)) {
+      events = [events];
+    }
+    if (events.length === 0) return { rowCount: 0 };
+
+    const { sql, values, uniqueEvents } = this._buildRoomStatusUpsertQuery(events, target);
+    if (!sql || uniqueEvents.length === 0) return { rowCount: 0 };
+
     try {
       const res = await this.pool.query(sql, values);
-      return { rowCount: res.rowCount }; // 包括插入和更新的行数
+      return { rowCount: res.rowCount };
     } catch (error) {
-      if (this.isRoomStatusMissingPartitionError(error)) {
-        const hotelIds = [...new Set(uniqueEvents.map(e => e.hotel_id).filter(id => id != null))];
+      if (target.autoCreatePartitions && this.isRoomStatusMissingPartitionError(error)) {
+        const hotelIds = [...new Set(uniqueEvents.map((event) => event.hotel_id).filter((id) => id != null))];
         if (hotelIds.length > 0) {
           console.log(`[db] 检测到 room_status 分区缺失，尝试自动创建分区，hotelIds: ${hotelIds.join(', ')}`);
           await this.ensureRoomStatusPartitions(hotelIds);
@@ -817,18 +854,43 @@ class DatabaseManager {
             const res = await this.pool.query(sql, values);
             return { rowCount: res.rowCount };
           } catch (retryError) {
-            console.warn('[db] upsertRoomStatus retry failed:', retryError.message);
+            console.warn(`[db] ${target.logPrefix} retry failed:`, retryError.message);
             return { error: retryError };
           }
         }
       }
 
-      // 不抛出错误，只记录日志，避免影响主流程（Heartbeat History 写入已成功）
-      console.warn('[db] upsertRoomStatus failed:', error.message);
+      console.warn(`[db] ${target.logPrefix} failed:`, error.message);
       return { error };
     }
   }
 
+
+
+  // 同步更新 room_status.room_status_moment 表
+  // 使用 INSERT ... ON CONFLICT ... DO UPDATE 实现 upsert
+  async upsertRoomStatus(events) {
+    return this._upsertRoomStatusToTarget(events, {
+      tableName: this.config.roomStatusTable ?? 'room_status.room_status_moment',
+      conflictColumns: ['hotel_id', 'room_id', 'device_id'],
+      includeGuid: true,
+      autoCreatePartitions: true,
+      tableRef: this.config.roomStatusTable ?? 'room_status.room_status_moment',
+      logPrefix: 'upsertRoomStatus',
+    });
+  }
+
+  async upsertRoomStatusG5(events) {
+    return this._upsertRoomStatusToTarget(events, {
+      tableName: this.config.roomStatusTable ?? 'room_status.room_status_moment_g5',
+      conflictColumns: ['hotel_id', 'room_id'],
+      includeGuid: false,
+      autoCreatePartitions: false,
+      tableRef: this.config.roomStatusTable ?? 'room_status.room_status_moment_g5',
+      logPrefix: 'upsertRoomStatusG5',
+    });
+  }
+
   isRoomStatusMissingPartitionError(error) {
     const msg = String(error?.message ?? '');
     // 错误码 23514 (check_violation) 通常在插入分区表且无对应分区时触发
diff --git a/src/index.js b/src/index.js
index 36034bc..141f799 100644
--- a/src/index.js
+++ b/src/index.js
@@ -12,6 +12,7 @@ class WebBLSHeartbeatServer {
     this.kafkaConsumer = null;
     this.heartbeatProcessor = null;
     this.databaseManager = null;
+    this.g5DatabaseManager = null;
     this.redis = null;
     this.consumers = null;
     this.stats = new StatsCounters();
@@ -33,12 +34,31 @@ class WebBLSHeartbeatServer {
       console.log('数据库连接成功');
       await this.redis?.info('数据库连接成功', { module: 'db' });
 
+      if (this.config.g5db?.enabled) {
+        try {
+          this.g5DatabaseManager = new DatabaseManager({ ...this.config.g5db, maxConnections: 1 });
+          await this.g5DatabaseManager.connect();
+          console.log('G5数据库连接成功');
+          await this.redis?.info('G5数据库连接成功', { module: 'db', table: this.config.g5db?.g5Table });
+        } catch (error) {
+          this.g5DatabaseManager = null;
+          console.warn('G5数据库连接失败，已跳过 G5 写入:', error);
+          await this.redis?.warn('G5数据库连接失败，已跳过 G5 写入', {
+            module: 'db',
+            table: this.config.g5db?.g5Table,
+            error: String(error?.message ?? error),
+          });
+        }
+      }
+
       // 打印双写配置摘要
       const dbCfg = this.config.db;
       const dualWriteSummary = {
         legacyHeartbeat: dbCfg.legacyHeartbeatEnabled ? `ON → ${dbCfg.legacyTable}` : 'OFF',
         g4HotHeartbeat: dbCfg.g4HotHeartbeatEnabled ? `ON → ${dbCfg.g4HotTable}` : 'OFF',
-        roomStatus: dbCfg.roomStatusEnabled !== false ? 'ON' : 'OFF',
+        g5Heartbeat: this.config.g5db?.enabled ? `ON → ${this.config.g5db?.g5Table}` : 'OFF',
+        roomStatus: dbCfg.roomStatusEnabled !== false ? `ON → ${dbCfg.roomStatusTable}` : 'OFF',
+        g5RoomStatus: this.config.g5db?.roomStatusEnabled ? `ON → ${this.config.g5db?.roomStatusTable}` : 'OFF',
       };
       console.log('双写配置摘要:', dualWriteSummary);
       await this.redis?.info('双写配置摘要', { module: 'db', ...dualWriteSummary });
@@ -56,6 +76,7 @@ class WebBLSHeartbeatServer {
 
       // 初始化处理器（共享批处理队列）
       this.heartbeatProcessor = new HeartbeatProcessor(this.config.processor, this.databaseManager, {
+        g5DatabaseManager: this.g5DatabaseManager,
         redis: this.redis,
         stats: this.stats,
         onDbOffline: () => {
@@ -114,6 +135,10 @@ class WebBLSHeartbeatServer {
         await this.databaseManager.disconnect();
       }
 
+      if (this.g5DatabaseManager) {
+        await this.g5DatabaseManager.disconnect();
+      }
+
       if (this.redis) {
         await this.redis.info('BLS心跳接收端已停止', { module: 'app' });
         await this.redis.disconnect();
diff --git a/src/processor/heartbeatProcessor.js b/src/processor/heartbeatProcessor.js
index b33a63b..4d1e832 100644
--- a/src/processor/heartbeatProcessor.js
+++ b/src/processor/heartbeatProcessor.js
@@ -6,6 +6,7 @@ class HeartbeatProcessor {
   constructor(config, databaseManager, deps = {}) {
     this.config = config;
     this.databaseManager = databaseManager;
+    this.g5DatabaseManager = deps?.g5DatabaseManager ?? null;
     this.redis = deps?.redis ?? null;
     this.stats = deps?.stats ?? null;
     this.batchQueue = [];
@@ -218,14 +219,7 @@ class HeartbeatProcessor {
       const { legacy: legacyResult, g4Hot: g4HotResult } = dualResult;
 
       // B. room_status 始终独立执行（不依赖明细写入结果）
-      const roomStatusEnabled = this.databaseManager.config?.roomStatusEnabled !== false;
-      if (roomStatusEnabled && batchData.length > 0) {
-        this.databaseManager.upsertRoomStatus(batchData).catch(err => {
-          console.warn('异步同步 room_status 失败 (忽略):', err);
-          this.stats?.incRoomStatusFailed?.(batchData.length);
-        });
-        this.stats?.incRoomStatusWritten?.(batchData.length);
-      }
+      this._writeRoomStatus(batchData);
 
       // C. 暂停消费判定（基于当前启用的关键 sink）
       const shouldPause = this._shouldPauseConsumption(legacyResult, g4HotResult);
@@ -240,14 +234,17 @@ class HeartbeatProcessor {
         return;
       }
 
-      // D. 清理队列、resolve deferreds
+      // D. G5 临时库独立写入，不参与主链路暂停判定
+      const g5Result = await this._writeToG5(batchData);
+
+      // E. 清理队列、resolve deferreds
       this.batchQueue.splice(0, batchEventCount);
       this.batchMessageQueue.splice(0, batchMessageCount);
       for (const entry of batchMessages) {
         entry.deferred.resolve({ insertedCount: entry.eventCount });
       }
 
-      // E. 统计 & 日志
+      // F. 统计 & 日志
       if (legacyResult.enabled) {
         this.stats?.incDbWritten?.(legacyResult.insertedCount);
         if (legacyResult.failedRecords.length > 0) {
@@ -263,7 +260,25 @@ class HeartbeatProcessor {
         }
       }
 
-      // F. 错误表：仅 g4Hot 失败记录（旧表失败不写错误表）
+      if (g5Result.enabled) {
+        const g5FailedCount = g5Result.failedRecords.length > 0
+          ? g5Result.failedRecords.length
+          : (g5Result.isConnectionError ? batchData.length : 0);
+        this.stats?.incG5Written?.(g5Result.insertedCount);
+        if (g5FailedCount > 0) {
+          this.stats?.incG5WriteFailed?.(g5FailedCount);
+          console.warn(`[g5] 批次写入失败：成功 ${g5Result.insertedCount}，失败 ${g5FailedCount}`);
+          await this.redis?.warn('G5批次写入失败', {
+            module: 'db',
+            table: this.g5DatabaseManager?.config?.g5Table,
+            insertedCount: g5Result.insertedCount,
+            failedCount: g5FailedCount,
+            error: String(g5Result.error?.message ?? g5Result.error ?? 'g5 write failed'),
+          });
+        }
+      }
+
+      // G. 错误表：仅 g4Hot 失败记录（旧表失败不写错误表）
       if (g4HotResult.enabled && g4HotResult.failedRecords.length > 0) {
         const dbPayload = g4HotResult.failedRecords.map(item => ({
           hotel_id: item.record?.hotel_id ?? null,
@@ -276,7 +291,7 @@ class HeartbeatProcessor {
         this.stats?.incG4HotErrorTableInserted?.(dbPayload.length);
       }
 
-      // G. Legacy 失败仅日志（不写错误表）
+      // H. Legacy 失败仅日志（不写错误表）
       if (legacyResult.enabled && legacyResult.failedRecords.length > 0) {
         for (const item of legacyResult.failedRecords.slice(0, 10)) {
           console.warn('[legacy] 单条写入失败:', item.error?.message);
@@ -379,6 +394,54 @@ class HeartbeatProcessor {
     }, 5000);
   }
 
+  async _writeToG5(batchData) {
+    if (!this.g5DatabaseManager?.config?.enabled) {
+      return { enabled: false, success: true, insertedCount: 0, failedRecords: [], error: null, isConnectionError: false, batchError: null };
+    }
+
+    try {
+      return await this.g5DatabaseManager.insertHeartbeatEventsG5(batchData);
+    } catch (error) {
+      const isConnectionError = typeof this.g5DatabaseManager?._isDbConnectionError === 'function'
+        ? this.g5DatabaseManager._isDbConnectionError(error)
+        : this._isConnectionError(error);
+      return {
+        enabled: true,
+        success: false,
+        insertedCount: 0,
+        failedRecords: [],
+        error,
+        isConnectionError,
+        batchError: error,
+      };
+    }
+  }
+
+  _writeRoomStatus(batchData) {
+    const oldRoomStatusEnabled = this.databaseManager.config?.roomStatusEnabled !== false;
+    if (oldRoomStatusEnabled && batchData.length > 0) {
+      this.databaseManager.upsertRoomStatus(batchData).catch(err => {
+        console.warn('异步同步 room_status 失败 (忽略):', err);
+        this.stats?.incRoomStatusFailed?.(batchData.length);
+      });
+      this.stats?.incRoomStatusWritten?.(batchData.length);
+    }
+
+    const g5RoomStatusEnabled = this.g5DatabaseManager?.config?.roomStatusEnabled === true;
+    if (g5RoomStatusEnabled && batchData.length > 0 && typeof this.g5DatabaseManager?.upsertRoomStatusG5 === 'function') {
+      this.g5DatabaseManager.upsertRoomStatusG5(batchData).catch(async (err) => {
+        console.warn('异步同步 G5 room_status 失败 (忽略):', err);
+        this.stats?.incRoomStatusFailed?.(batchData.length);
+        await this.redis?.warn('G5 room_status 同步失败', {
+          module: 'db',
+          table: this.g5DatabaseManager?.config?.roomStatusTable,
+          error: String(err?.message ?? err),
+        });
+      });
+      this.stats?.incRoomStatusWritten?.(batchData.length);
+    }
+  }
+
   _emitDbWriteError(error, rawData) {
     const list = Array.isArray(rawData) ? rawData : rawData ? [rawData] : [];
     if (list.length > 0) {
diff --git a/src/stats/statsManager.js b/src/stats/statsManager.js
index b3a3de3..c22adfa 100644
--- a/src/stats/statsManager.js
+++ b/src/stats/statsManager.js
@@ -1,10 +1,13 @@
 class StatsCounters {
   constructor() {
-    // 原有 4 槽 + 新增 7 槽 = 11 槽
+    // [0] dbWritten, [1] filtered, [2] kafkaPulled, [3] dbWriteFailed,
+    // [4] g4HotWritten, [5] g4HotWriteFailed, [6] roomStatusWritten,
+    // [7] roomStatusFailed, [8] g4HotErrorTableInserted,
+    // [9] g5Written, [10] g5WriteFailed
     // [0] dbWritten, [1] filtered, [2] kafkaPulled, [3] dbWriteFailed,
     // [4] g4HotWritten, [5] g4HotWriteFailed, [6] roomStatusWritten,
     // [7] roomStatusFailed, [8] g4HotErrorTableInserted
-    this._minuteBuf = new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 9);
+    this._minuteBuf = new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 11);
     this._minute = new BigInt64Array(this._minuteBuf);
   }
 
@@ -23,6 +26,8 @@ class StatsCounters {
   incRoomStatusWritten(n = 1) { this._inc(6, n); }
   incRoomStatusFailed(n = 1) { this._inc(7, n); }
   incG4HotErrorTableInserted(n = 1) { this._inc(8, n); }
+  incG5Written(n = 1) { this._inc(9, n); }
+  incG5WriteFailed(n = 1) { this._inc(10, n); }
 
   snapshotAndResetMinute() {
     const dbWritten = Atomics.exchange(this._minute, 0, 0n);
@@ -34,7 +39,9 @@ class StatsCounters {
     const roomStatusWritten = Atomics.exchange(this._minute, 6, 0n);
     const roomStatusFailed = Atomics.exchange(this._minute, 7, 0n);
     const g4HotErrorTableInserted = Atomics.exchange(this._minute, 8, 0n);
-    return { dbWritten, filtered, kafkaPulled, dbWriteFailed, g4HotWritten, g4HotWriteFailed, roomStatusWritten, roomStatusFailed, g4HotErrorTableInserted };
+    const g5Written = Atomics.exchange(this._minute, 9, 0n);
+    const g5WriteFailed = Atomics.exchange(this._minute, 10, 0n);
+    return { dbWritten, filtered, kafkaPulled, dbWriteFailed, g4HotWritten, g4HotWriteFailed, roomStatusWritten, roomStatusFailed, g4HotErrorTableInserted, g5Written, g5WriteFailed };
   }
 }
 
@@ -82,13 +89,15 @@ class StatsReporter {
     if (this._lastFlushMinute === minuteKey) {
       return;
     }
-    const { dbWritten, filtered, kafkaPulled, dbWriteFailed, g4HotWritten, g4HotWriteFailed, roomStatusWritten, roomStatusFailed, g4HotErrorTableInserted } = this.stats.snapshotAndResetMinute();
+    const { dbWritten, filtered, kafkaPulled, dbWriteFailed, g4HotWritten, g4HotWriteFailed, roomStatusWritten, roomStatusFailed, g4HotErrorTableInserted, g5Written, g5WriteFailed } = this.stats.snapshotAndResetMinute();
     this._lastFlushMinute = minuteKey;
     const ts = formatTimestamp(new Date());
     this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} Legacy写入量: ${dbWritten}条`, metadata: { module: 'stats' } });
     this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} Legacy写入失败量: ${dbWriteFailed}条`, metadata: { module: 'stats' } });
     this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} G4Hot写入量: ${g4HotWritten}条`, metadata: { module: 'stats' } });
     this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} G4Hot写入失败量: ${g4HotWriteFailed}条`, metadata: { module: 'stats' } });
+    this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} G5写入量: ${g5Written}条`, metadata: { module: 'stats' } });
+    this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} G5写入失败量: ${g5WriteFailed}条`, metadata: { module: 'stats' } });
     this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} RoomStatus写入量: ${roomStatusWritten}条`, metadata: { module: 'stats' } });
     this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} RoomStatus失败量: ${roomStatusFailed}条`, metadata: { module: 'stats' } });
     this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} G4Hot错误表插入量: ${g4HotErrorTableInserted}条`, metadata: { module: 'stats' } });
diff --git a/test/dualWrite.test.js b/test/dualWrite.test.js
index cbdd448..e79f12b 100644
--- a/test/dualWrite.test.js
+++ b/test/dualWrite.test.js
@@ -22,6 +22,7 @@ const buildBasePayload = () => ({
 
 function makeDualResult({ legacyEnabled = true, legacySuccess = true, legacyConn = false,
   g4HotEnabled = false, g4HotSuccess = true, g4HotConn = false,
+  g5Enabled = false, g5Success = true, g5Conn = false,
   insertedCount = 1, failedRecords = [] } = {}) {
   return {
     legacy: {
@@ -34,6 +35,11 @@ function makeDualResult({ legacyEnabled = true, legacySuccess = true, legacyConn
       failedRecords: g4HotSuccess ? [] : failedRecords, error: g4HotSuccess ? null : new Error('g4hot fail'),
       isConnectionError: g4HotConn, batchError: g4HotSuccess ? null : new Error('g4hot fail'),
     },
+    g5: {
+      enabled: g5Enabled, success: g5Success, insertedCount: g5Success ? insertedCount : 0,
+      failedRecords: g5Success ? [] : failedRecords, error: g5Success ? null : new Error('g5 fail'),
+      isConnectionError: g5Conn, batchError: g5Success ? null : new Error('g5 fail'),
+    },
   };
 }
 
@@ -45,6 +51,7 @@ function buildMockDb(overrides = {}) {
       roomStatusEnabled: true,
       legacyTable: 'heartbeat.heartbeat_events',
       g4HotTable: 'heartbeat.heartbeat_events_g4_hot',
+      roomStatusTable: 'room_status.room_status_moment',
       ...overrides.config,
     },
     insertHeartbeatEventsDual: overrides.insertHeartbeatEventsDual ?? (async () => makeDualResult()),
@@ -55,11 +62,40 @@ function buildMockDb(overrides = {}) {
   };
 }
 
-function buildProcessor(dbOverrides = {}, processorConfig = {}) {
+function buildMockG5Db(overrides = {}) {
+  return {
+    config: {
+      enabled: true,
+      g5HeartbeatEnabled: true,
+      g5Table: 'heartbeat.heartbeat_events_g5',
+      roomStatusEnabled: true,
+      roomStatusTable: 'room_status.room_status_moment_g5',
+      ...overrides.config,
+    },
+    insertHeartbeatEventsG5: overrides.insertHeartbeatEventsG5 ?? (async () => ({
+      enabled: true,
+      success: true,
+      insertedCount: 1,
+      failedRecords: [],
+      error: null,
+      isConnectionError: false,
+      batchError: null,
+    })),
+    upsertRoomStatusG5: overrides.upsertRoomStatusG5 ?? (async () => ({ rowCount: 1 })),
+    _isDbConnectionError: overrides._isDbConnectionError ?? (() => false),
+  };
+}
+
+function buildProcessor(dbOverrides = {}, processorConfig = {}, g5Overrides = null) {
   const db = buildMockDb(dbOverrides);
+  const deps = {};
+  if (g5Overrides) {
+    deps.g5DatabaseManager = buildMockG5Db(g5Overrides);
+  }
   return new HeartbeatProcessor(
     { batchSize: 1, batchTimeout: 1000, ...processorConfig },
-    db
+    db,
+    deps
   );
 }
 
@@ -218,6 +254,112 @@ describe('Dual-write: room_status 始终执行', () => {
   });
 });
 
+describe('RoomStatus dual-write', () => {
+  it('should write old and g5 room_status independently', async () => {
+    let oldCalled = false;
+    let g5Called = false;
+    const processor = buildProcessor(
+      {
+        config: { legacyHeartbeatEnabled: true, g4HotHeartbeatEnabled: false, roomStatusEnabled: true },
+        insertHeartbeatEventsDual: async () => makeDualResult({ legacyEnabled: true, g4HotEnabled: false }),
+        upsertRoomStatus: async () => { oldCalled = true; return { rowCount: 1 }; },
+      },
+      {},
+      {
+        config: { roomStatusEnabled: true },
+        upsertRoomStatusG5: async () => { g5Called = true; return { rowCount: 1 }; },
+      }
+    );
+
+    const msg = { value: Buffer.from(JSON.stringify(buildBasePayload()), 'utf8') };
+    await processor.processMessage(msg);
+    await new Promise(r => setTimeout(r, 50));
+    assert.equal(oldCalled, true);
+    assert.equal(g5Called, true);
+  });
+
+  it('should allow old room_status off while g5 room_status stays on', async () => {
+    let oldCalled = false;
+    let g5Called = false;
+    const processor = buildProcessor(
+      {
+        config: { legacyHeartbeatEnabled: true, g4HotHeartbeatEnabled: false, roomStatusEnabled: false },
+        insertHeartbeatEventsDual: async () => makeDualResult({ legacyEnabled: true, g4HotEnabled: false }),
+        upsertRoomStatus: async () => { oldCalled = true; return { rowCount: 1 }; },
+      },
+      {},
+      {
+        config: { roomStatusEnabled: true },
+        upsertRoomStatusG5: async () => { g5Called = true; return { rowCount: 1 }; },
+      }
+    );
+
+    const msg = { value: Buffer.from(JSON.stringify(buildBasePayload()), 'utf8') };
+    await processor.processMessage(msg);
+    await new Promise(r => setTimeout(r, 50));
+    assert.equal(oldCalled, false);
+    assert.equal(g5Called, true);
+  });
+});
+
+describe('G5-write: 独立写库', () => {
+  it('should write to g5 independently after legacy/g4 succeed', async () => {
+    let g5Captured = null;
+    const processor = buildProcessor(
+      {
+        config: { legacyHeartbeatEnabled: true, g4HotHeartbeatEnabled: true },
+        insertHeartbeatEventsDual: async () => makeDualResult({ legacyEnabled: true, g4HotEnabled: true }),
+      },
+      {},
+      {
+        insertHeartbeatEventsG5: async (events) => {
+          g5Captured = events;
+          return {
+            enabled: true,
+            success: true,
+            insertedCount: events.length,
+            failedRecords: [],
+            error: null,
+            isConnectionError: false,
+            batchError: null,
+          };
+        },
+      }
+    );
+
+    const msg = { value: Buffer.from(JSON.stringify(buildBasePayload()), 'utf8') };
+    const res = await processor.processMessage(msg);
+    assert.deepEqual(res, { insertedCount: 1 });
+    assert.ok(Array.isArray(g5Captured));
+    assert.equal(g5Captured.length, 1);
+  });
+
+  it('should not block main flow when g5 write fails', async () => {
+    const processor = buildProcessor(
+      {
+        config: { legacyHeartbeatEnabled: true, g4HotHeartbeatEnabled: false },
+        insertHeartbeatEventsDual: async () => makeDualResult({ legacyEnabled: true, g4HotEnabled: false }),
+      },
+      {},
+      {
+        insertHeartbeatEventsG5: async () => ({
+          enabled: true,
+          success: false,
+          insertedCount: 0,
+          failedRecords: [{ error: new Error('g5 fail'), record: buildBasePayload() }],
+          error: new Error('g5 fail'),
+          isConnectionError: false,
+          batchError: new Error('g5 fail'),
+        }),
+      }
+    );
+
+    const msg = { value: Buffer.from(JSON.stringify(buildBasePayload()), 'utf8') };
+    const res = await processor.processMessage(msg);
+    assert.deepEqual(res, { insertedCount: 1 });
+  });
+});
+
 describe('Dual-write: 暂停消费策略', () => {
   it('should NOT pause when both detail writes disabled but room_status enabled', async () => {
     let paused = false;
@@ -371,6 +513,48 @@ describe('DatabaseManager: _g4HotToRowValues', () => {
     const guid = values[cols.indexOf('guid')];
     assert.equal(guid, 'a0b1c2d3e4f56789abcdef0123456789');
   });
+
+  it('omits guid column and value for g5 rows', () => {
+    const dm = new DatabaseManager({ host: 'x', port: 5432, user: 'x', password: 'x', database: 'x' });
+    const cols = dm._getG5Columns();
+    const values = dm._g5ToRowValues(buildBasePayload());
+    assert.equal(cols.includes('guid'), false);
+    assert.equal(values.length, cols.length);
+  });
+
+  it('writes g5 base array columns as null', () => {
+    const dm = new DatabaseManager({ host: 'x', port: 5432, user: 'x', password: 'x', database: 'x' });
+    const cols = dm._getG5Columns();
+    const values = dm._g5ToRowValues({
+      ...buildBasePayload(),
+      service_mask: 7,
+      elec_address: ['e1', 'e2'],
+      air_address: ['ac1', 'ac2'],
+      voltage: [220.5, 221.5],
+      ampere: [1.1, 1.2],
+      power: [100, 200],
+      phase: ['A', 'B'],
+      energy: [10, 20],
+      sum_energy: [100, 200],
+      state: [1, 0],
+      model: [2, 3],
+      speed: [1, 2],
+      set_temp: [24, 25],
+      now_temp: [26, 27],
+      solenoid_valve: [1, 0],
+      extra: { source: 'test' },
+    });
+
+    for (const column of ['service_mask', 'elec_address', 'air_address', 'voltage', 'ampere', 'power', 'phase', 'energy', 'sum_energy', 'state', 'model', 'speed', 'set_temp', 'now_temp', 'solenoid_valve', 'extra']) {
+      assert.equal(values[cols.indexOf(column)], null);
+    }
+
+    assert.equal(values[cols.indexOf('svc_01')], true);
+    assert.equal(values[cols.indexOf('svc_02')], true);
+    assert.equal(values[cols.indexOf('svc_03')], true);
+    assert.equal(values[cols.indexOf('air_address_1')], 'ac1');
+    assert.equal(values[cols.indexOf('elec_address_1')], 'e1');
+  });
 });
 
 describe('DatabaseManager: _formatPgCol', () => {
@@ -382,6 +566,37 @@ describe('DatabaseManager: _formatPgCol', () => {
   });
 });
 
+describe('DatabaseManager: room_status upsert SQL', () => {
+  it('does not update ts_ms in old room_status DO UPDATE SET', () => {
+    const dm = new DatabaseManager({ host: 'x', port: 5432, user: 'x', password: 'x', database: 'x', roomStatusTable: 'room_status.room_status_moment' });
+    const built = dm._buildRoomStatusUpsertQuery([buildBasePayload()], {
+      tableName: 'room_status.room_status_moment',
+      conflictColumns: ['hotel_id', 'room_id', 'device_id'],
+      includeGuid: true,
+      autoCreatePartitions: true,
+      tableRef: 'room_status.room_status_moment',
+      logPrefix: 'upsertRoomStatus',
+    });
+    assert.match(built.sql, /ON CONFLICT \(hotel_id, room_id, device_id\)/);
+    assert.doesNotMatch(built.sql, /ts_ms = EXCLUDED\.ts_ms/);
+  });
+
+  it('uses hotel_id and room_id as conflict key for g5 room_status', () => {
+    const dm = new DatabaseManager({ host: 'x', port: 5432, user: 'x', password: 'x', database: 'x', roomStatusTable: 'room_status.room_status_moment_g5' });
+    const built = dm._buildRoomStatusUpsertQuery([buildBasePayload()], {
+      tableName: 'room_status.room_status_moment_g5',
+      conflictColumns: ['hotel_id', 'room_id'],
+      includeGuid: false,
+      autoCreatePartitions: false,
+      tableRef: 'room_status.room_status_moment_g5',
+      logPrefix: 'upsertRoomStatusG5',
+    });
+    assert.match(built.sql, /ON CONFLICT \(hotel_id, room_id\)/);
+    assert.doesNotMatch(built.sql, /ts_ms = EXCLUDED\.ts_ms/);
+    assert.equal(/guid/.test(built.sql), false);
+  });
+});
+
 describe('DatabaseManager: insertHeartbeatEventsDual', () => {
   it('returns empty results when both targets disabled', async () => {
     const dm = new DatabaseManager({
diff --git a/test/stats.test.js b/test/stats.test.js
index fcd8152..417f018 100644
--- a/test/stats.test.js
+++ b/test/stats.test.js
@@ -9,28 +9,36 @@ describe('StatsCounters', () => {
     stats.incFiltered(2);
     stats.incKafkaPulled(5);
     stats.incDbWriteFailed(4);
+    stats.incG5Written(6);
+    stats.incG5WriteFailed(1);
 
     const first = stats.snapshotAndResetMinute();
     assert.equal(first.dbWritten, 3n);
     assert.equal(first.filtered, 2n);
     assert.equal(first.kafkaPulled, 5n);
     assert.equal(first.dbWriteFailed, 4n);
+    assert.equal(first.g5Written, 6n);
+    assert.equal(first.g5WriteFailed, 1n);
 
     const second = stats.snapshotAndResetMinute();
     assert.equal(second.dbWritten, 0n);
     assert.equal(second.filtered, 0n);
     assert.equal(second.kafkaPulled, 0n);
     assert.equal(second.dbWriteFailed, 0n);
+    assert.equal(second.g5Written, 0n);
+    assert.equal(second.g5WriteFailed, 0n);
   });
 });
 
 describe('StatsReporter', () => {
-  it('writes three [STATS] info logs to redis console', () => {
+  it('writes all [STATS] info logs to redis console', () => {
     const stats = new StatsCounters();
     stats.incDbWritten(7);
     stats.incFiltered(8);
     stats.incKafkaPulled(9);
     stats.incDbWriteFailed(2);
+    stats.incG5Written(5);
+    stats.incG5WriteFailed(1);
 
     const calls = { push: [] };
     const redis = {
@@ -43,17 +51,19 @@ describe('StatsReporter', () => {
     const reporter = new StatsReporter({ redis, stats });
     reporter.flushOnce();
 
-    assert.equal(calls.push.length, 9);
+    assert.equal(calls.push.length, 11);
     for (const c of calls.push) assert.equal(c.level, 'info');
     assert.match(calls.push[0].message, /Legacy写入量: 7条$/);
     assert.match(calls.push[1].message, /Legacy写入失败量: 2条$/);
     assert.match(calls.push[2].message, /G4Hot写入量: 0条$/);
     assert.match(calls.push[3].message, /G4Hot写入失败量: 0条$/);
-    assert.match(calls.push[4].message, /RoomStatus写入量: 0条$/);
-    assert.match(calls.push[5].message, /RoomStatus失败量: 0条$/);
-    assert.match(calls.push[6].message, /G4Hot错误表插入量: 0条$/);
-    assert.match(calls.push[7].message, /数据过滤量: 8条$/);
-    assert.match(calls.push[8].message, /Kafka拉取量: 9条$/);
+    assert.match(calls.push[4].message, /G5写入量: 5条$/);
+    assert.match(calls.push[5].message, /G5写入失败量: 1条$/);
+    assert.match(calls.push[6].message, /RoomStatus写入量: 0条$/);
+    assert.match(calls.push[7].message, /RoomStatus失败量: 0条$/);
+    assert.match(calls.push[8].message, /G4Hot错误表插入量: 0条$/);
+    assert.match(calls.push[9].message, /数据过滤量: 8条$/);
+    assert.match(calls.push[10].message, /Kafka拉取量: 9条$/);
   });
 });