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Sonoff Zigbee TRV Thermostatic Radiator Valve Gen2
$59.00
The SONOFF TRV Gen2 (TRV-ZBT) is a compact Zigbee 3.0 thermostatic radiator valve designed for smarter, more precise control of home heating. Featuring a clear colour IPS display, quiet operation and advanced scheduling, it allows you to automatically adjust room temperatures throughout the day while helping reduce unnecessary energy use. Support for remote temperature sensors, open-window detection, child lock and frost protection makes it a practical upgrade for compatible radiator heating systems.
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Description
SONOFF
Zigbee Thermostatic Radiator Valve — TRV Gen2
- Zigbee smart thermostatic radiator valve for precise temperature control
- Compatible with standard M30 × 1.5mm radiator valves, with additional valve adapters included
- High-resolution IPS colour display with 4-way rotation for flexible installation
- Automatic open-window detection can pause heating to help reduce energy use
- Low-noise valve operation suitable for bedrooms and other quiet areas
- Built-in child lock helps prevent accidental changes
- Boost Mode, temperature offset adjustment and group control supported
- Powered by 2 × AA alkaline batteries with up to approximately 6 months battery life under normal use
- Integrates with Home Assistant via Zigbee2MQTT, with expanding ZHA support
Compact.
Compared with the previous‑generation, the new TRV-ZBT volume is 38% smaller. It easily fits confined spaces for a more flexible, unobtrusive installation.
Smart.
Wirelessly add to your Zigbee controller (including Home Assistant) for smart control of your hydronic heating radiators.
Display.
HD IPS colour display.
Adapatable.
Easily rotate the display to suite any installation orientation.
Adjustable.
Includes easy manual dial control.
Compatible.
Fits standard M30 × 1.5 mm radiator valves, with adapters included for virtually all valve types.
Child lock.
Anti-Calcification.
Low battery alert & actions.
The finer details
| Brand | Sonoff |
|---|---|
| Model | TRV-ZBT (TRV Gen2) |
| Product type | Zigbee thermostatic radiator valve |
| Wireless connectivity | Zigbee 3.0 (IEEE 802.15.4) and Bluetooth Low Energy (BLE) |
| Hub requirement | A compatible Zigbee hub or coordinator is required for Zigbee smart home integration |
| Power supply | 3V DC via 2 × 1.5V AA (LR6) alkaline batteries |
| Batteries included | Yes – 2 × AA batteries, pre-installed |
| Battery life | Up to 6 months with 2,000mAh alkaline batteries; varies with usage, battery quality and network conditions |
| Temperature setting range | 5°C to 30°C |
| Display | IPS colour screen with four selectable orientations, adjustable in 90° increments |
| Physical controls | Rotary adjustment knob and central push button |
| Operating modes | Manual, automatic scheduling and frost protection, plus boost and timed temperature override |
| Heating schedules | 3 independent 7-day plans, each supporting up to 12 temperature periods per day |
| Temperature control | Smart PID control with variable valve opening |
| External temperature sensing | Supported using a compatible external temperature sensor and supported hub or platform |
| Open-window detection | Automatic temperature-drop detection and compatible door/window sensor integration |
| Protection features | Child lock, frost protection, weekly anti-calcification cycle and low-battery alerts |
| Valve connection | M30 × 1.5mm threaded fitting (with adaptors included for other valve fittings) |
| Included valve adaptors | RA, RAV, RAVL, CAL, GIA and M28 |
| Processor | TLSR8258 |
| Operating temperature | −10°C to 50°C |
| Operating humidity | 5–95% RH, non-condensing |
| Housing material | Polycarbonate (PC) |
| Colour | White |
| Dimensions | 50 × 50 × 82.9mm |
| Weight | 169g, including batteries |
| Rated operating cycles | 10,000 cycles |
| Certifications | RCM, CE and RoHS |
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