Aqara Radiator Thermostat W600 vs Sonoff TRV Gen2 Zigbee Thermostatic Radiator Valve

Aqara lists the wireless protocols as Thread, Zigbee and BLE, and the Matter certificate records Thread and Bluetooth as the transport interfaces.

The official spec sheet lists connectivity as Zigbee 3.0 / BLE. Bluetooth is used to pair the valve with the eWeLink app when the device is already joined to a third-party Zigbee platform, and the app home screen carries a BLE icon that switches the radio.

Zigbee mode is the one that unlocks the Aqara-only features (local schedules, external sensor linking, group control) and needs an Aqara Zigbee 3.0 hub.

Zigbee 3.0 end device (IEEE 802.15.4). SONOFF lists ZBBridge-P, ZBBridge-U, NSPanel Pro, iHost and its ZBDongle coordinators as compatible hubs.

The LED display can be rotated 180 degrees so it stays readable whichever way the valve is mounted.

High-definition IPS colour screen showing status, current temperature and settings, with 4-way rotation so it stays upright whichever way the valve is mounted.

Open window detection pauses heating for 30 minutes when a bound Aqara door and window sensor reports an opening, and presence or humidity sensors can drive the setpoint through Aqara automations.

Smart Scene triggers on open-window detection, device status or the current temperature, and can switch the valve to Auto, Anti-freeze, Manual or Boost or set a temperature between 5 and 30 degrees Celsius.

The user manual lists a child lock indicator on the display, and Zigbee2MQTT exposes child_lock as a controllable setting.

Child lock disables the knob so the valve can only be changed from the app.

The IPS screen shows the current temperature alongside the target temperature and the heating status.

It can take its reading from an Aqara temperature sensor such as the Climate Sensor W100 placed elsewhere in the room, so it regulates the room rather than the air next to the radiator. Requires Zigbee mode through the Aqara Home app.

Temp. Display from External Sensor lets the valve use another SONOFF sensor on the same eWeLink account as its control reference: SNZB-02, SNZB-02P, SNZB-02D, SNZB-02WD, SNZB-02LD, SNZB-02B and SNZB-02M.

Heating switches on automatically when the ambient temperature falls below 5 degrees Celsius and stops once it climbs back to 8 degrees Celsius.

Anti-freeze mode holds a minimum safeguard temperature to protect pipes and the heating system in cold weather, and its threshold is adjustable.

Via Matter

SONOFF documents Alexa under Third-party Platforms for this model, with working mode and temperature control. Its hub list also covers direct pairing to the Zigbee radio of the Echo Show 2nd Gen, Echo Plus 2nd Gen and Echo 4th Gen.

Via Matter

SONOFF documents Google Home under Third-party Platforms for this model, with working mode and temperature control, through the eWeLink account or a SONOFF Matter bridge.

Home Assistant reaches it two ways: as a Matter thermostat over Thread, and over Zigbee, where Zigbee2MQTT lists the WT-A03E and exposes its schedules, presets, child lock and external temperature input.

Zigbee2MQTT has a device page for the TRV-ZBT and SONOFF asks for Zigbee2MQTT 2.12.1 or later for full feature support. For ZHA, SONOFF publishes a quirk script while its pull request is pending, so some entities need that script until it is merged.

Via Matter

SONOFF documents SmartThings under Third-party Platforms for this model and publishes a SmartThings driver invite for it; a Zigbee hub such as the Aeotec SmartThings Hub v3 pairs the valve directly.

Up to 7 time periods per day across all 7 days, plus 5 preset modes. In Zigbee mode the schedule is stored on the device and keeps running with the internet down.

Three switchable schedule plans, each covering all seven days of the week with up to 12 time slots per day, plus Manual and Anti-freeze operating modes and a Boost timer.

A built-in temperature sensor drives the control loop, and it can be calibrated by up to plus or minus 5 degrees Celsius to match how the room actually feels.

The valve measures room temperature itself and shows it on the display, with a temperature offset setting to calibrate the reading.