Description
The SONOFF TRV Gen2 (TRV-ZBT) is a Zigbee smart thermostatic radiator valve that turns any radiator with an M30 × 1.5 mm valve into a smart, scheduled heater. It is about 38% smaller than the first-generation TRVZB, so it fits tight spaces behind furniture and curtains, and its HD IPS colour display can be rotated in four directions so it is easy to read however the valve is mounted.
Three independent weekly heating plans with up to 12 temperature periods per day, dual open-window detection, PID valve control and quiet operation keep every room comfortable while cutting wasted energy. It runs on 2 × AA alkaline batteries, pre-installed (up to 6 months under normal use), and the valve adapters in the package fit most heating systems.
Note: a SONOFF Zigbee gateway is required for remote control, schedules from the app and smart scenes (see "Works With" below). The valve can also be paired with the eWeLink app over Bluetooth.
Key Features
- Compact design, about 38% smaller in volume than the TRVZB
- HD IPS colour display that rotates in 4 directions
- 3 independent weekly heating plans with up to 12 temperature periods per day
- Dual open-window detection: linked SONOFF door/window sensor, or automatic detection of a fast temperature drop
- Use a SONOFF Zigbee temperature & humidity sensor as the room temperature source
- Energy saving mode and motion sensor linkage
- PID algorithm for stable temperature control, with low-noise valve operation
- Child lock, anti-calcification, anti-freeze mode and low-battery alert
- Group control, boost mode and temperature offset
- Up to 6 months of history: target temperature, room temperature and heating activity
- Dual-mode connectivity: Zigbee and Bluetooth (BLE)
Works With
Technical Specifications
| Specification |
Details |
| Model |
TRV-ZBT |
| Product Name |
TRV Gen2 |
| Product Type |
Zigbee Thermostatic Radiator Valve |
| Wireless Protocol |
Zigbee (IEEE 802.15.4) and Bluetooth (BLE) |
| MCU |
TLSR8258 |
| Input |
3V⎓ (2 × 1.5V batteries) |
| Battery Type |
1.5V LR6 alkaline AA batteries |
| Battery Life |
Up to 6 months under normal use |
| Valve Connection |
M30 × 1.5 mm (adapters in the package for most other valves) |
| Temperature Setting Range |
5°C ~ 30°C |
| Display |
HD IPS colour display, rotatable in 4 directions |
| Operating Temperature |
-10°C ~ 50°C |
| Operating Humidity |
5% – 95% RH, non-condensing |
| Operating Cycles |
10,000 cycles |
| Housing Material |
PC |
| Color |
White |
| Dimensions |
50 × 50 × 82.9 mm |
| Net Weight |
169 g (with batteries) |
| Certifications |
CE, RoHS |
What's in the Box
- 1 × TRV-ZBT radiator valve (2 × AA batteries pre-installed)
- 1 × Quick guide
- 1 × Installation video card (QR code)
- 6 × Valve adapters: CAL, RAVL, RAV, M28, GIA, RA
Why Choose the SONOFF TRV-ZBT?
- Smaller body that fits radiators in tight spaces
- Clear colour display you can read from any mounting angle
- Room-by-room schedules that heat only when you need it
- Saves energy with open-window detection and accurate PID control
Downloads
⬇ Download User Manual (PDF)
Warranty: 12-month warranty from the Official Distributor.
