SONOFF TRV-ZBT Gen2
Compact radiator valve with display (Zigbee)
SONOFF’s new generation: a third smaller, with a colour display. It can heat to the temperature of another sensor in the room, not just at the radiator.
Smaller and smarter than the TRVZB, but new: Home Assistant support is still catching up. How we rate
About the product
The SONOFF TRV-ZBT Gen2 is the successor to the popular TRVZB. It does the same job, heating to a schedule from your phone, but it is 38% smaller, has a colour display and can follow the temperature of another sensor in the room.
What is new compared to the TRVZB
- Compact 50 × 83 mm body: fits radiators close to a wall or behind a curtain.
- External temperature sensor: it is warmer at the radiator than in the room. With an external thermometer (such as the SONOFF SNZB-02D) it heats to what you actually feel.
- Display with the current and target temperature.
- Open-window detection, child lock and frost protection.
What you need
It uses Zigbee 3.0, so it needs a Zigbee hub. Adapters for valves from several makers are in the box.
Watch out for
It is a new model. We have not seen Home Assistant support (ZHA, Zigbee2MQTT) confirmed yet, so we do not list compatibility. If you need Home Assistant to work today, get the TRVZB.
Who it is for
People whose TRVZB is in the way at the radiator, or who want to regulate by the temperature in the middle of the room.
Photos: seller on AliExpress.
Where to buy
-
AliExpress
usually the lowest price, from China, in stock
Go to shop€32.23
price as of 14/11/2026
Links to shops are affiliate links: if you buy through them, we earn a small commission. Your price stays the same.
Price history
Price tracked since 14 November 2026. The chart appears once we have a few weeks of data.
Pros
- +38% smaller than the TRVZB, fits close to walls
- +Uses an external temperature sensor
- +Child lock and frost protection
Cons
- −New model, Zigbee2MQTT and ZHA support not confirmed yet
- −Pricier than the TRVZB
Specifications
| Protocol | Zigbee 3.0 |
|---|---|
| Size | 50 × 83 mm |
| Display | yes, colour |
| Features | open window, child lock, frost protection |