Device Information
- Model: KWS-306WF (also sold as GE304WF / KOWSI KWS-306WF / DEWIN KWS-306WF)
- Type: 3-Phase 4-Wire Smart Energy Meter with WiFi (Tuya)
- Category: likely
cz or dlq
- Firmware: Tuya protocol v3.5
Problem
When added to Home Assistant via the official Tuya Cloud integration, only the switch entity is exposed. No energy monitoring sensors appear:
- No voltage (per phase A/B/C)
- No current (per phase A/B/C)
- No power (per phase A/B/C + total)
- No energy consumption (kWh)
- No frequency, power factor, or temperature
The device does report all of these values — they are visible in the SmartLife/Tuya Smart app and accessible via local protocol (tuya-local project confirmed 139+ DPS in issue make-all/tuya-local#3531).
Root Cause
The Tuya Cloud API standard instruction set for the device's category does not include energy-related DPS. The device status endpoint only returns {"switch": true} through the cloud schema, even though the device firmware sends all energy data points.
Expected Behavior
The integration should expose all DPS reported by the device, including at minimum:
voltage_a, voltage_b, voltage_ccurrent_a, current_b, current_cpower_a, power_b, power_c, total_powertotal_forward_energyfrequency, power_factor, temperature
Related Issues
Impact
This is a popular and widely sold 3-phase energy meter on AliExpress/Amazon. Without energy sensors, the Tuya integration is unusable for its primary purpose (energy monitoring). Users are forced to use third-party integrations (tuya-local) which only work on the same LAN — making remote monitoring impossible through the official integration.
Device Information
czordlqProblem
When added to Home Assistant via the official Tuya Cloud integration, only the switch entity is exposed. No energy monitoring sensors appear:
The device does report all of these values — they are visible in the SmartLife/Tuya Smart app and accessible via local protocol (tuya-local project confirmed 139+ DPS in issue make-all/tuya-local#3531).
Root Cause
The Tuya Cloud API standard instruction set for the device's category does not include energy-related DPS. The device status endpoint only returns
{"switch": true}through the cloud schema, even though the device firmware sends all energy data points.Expected Behavior
The integration should expose all DPS reported by the device, including at minimum:
voltage_a,voltage_b,voltage_ccurrent_a,current_b,current_cpower_a,power_b,power_c,total_powertotal_forward_energyfrequency,power_factor,temperatureRelated Issues
cur_current,cur_power,cur_voltagereport is missing from a status of mcb with categorycz#527 — MCB (categorycz) missingcur_current,cur_power,cur_voltage(open, no response)dlq) missing power/voltage/current sensors (open, partial response)Impact
This is a popular and widely sold 3-phase energy meter on AliExpress/Amazon. Without energy sensors, the Tuya integration is unusable for its primary purpose (energy monitoring). Users are forced to use third-party integrations (tuya-local) which only work on the same LAN — making remote monitoring impossible through the official integration.