How It Works

1
Set up your Zigbee hub first
You need a Sonoff Zigbee Bridge Pro or NSPanel Pro. The TRV pairs through it.
2
Swap your old radiator knob
Close the radiator valve. Unscrew the manual knob. Screw the TRV on - 5 minutes, no tools.
3
Pair in eWeLink
Insert the AA batteries. Open eWeLink → your Zigbee hub → Add Device. Follow the on-screen pairing flow.
4
Set schedules per room
Pick target temperatures per time of day. Enable open-window detection. Add a child lock if needed. Repeat for each room.

Is This Right for Me?

Protocol: Zigbee 3.0
Hub required: Sonoff Zigbee Bridge Pro or NSPanel Pro
Compatible radiators: Standard European valves (M30 × 1.5 thread)
Power: 3× AA batteries (alkaline recommended)
Features: Scheduling, open-window detection, child lock
Home Assistant: Works via ZHA + Zigbee2MQTT
App: eWeLink (via Zigbee hub)

Product Details

Sonoff Zigbee Thermostatic Radiator Valve (TRVZB)

This smart radiator valve replaces your existing TRV (the knob on your radiator) and lets you control the heating from your phone. Set precise temperatures, create schedules, and save on heating bills – all through a Zigbee (a wireless smart home protocol that connects devices through a hub) hub and the eWeLink app.

Compatible with Lebanese standard radiator valves. Powered by 3 x AA batteries.

Key Features:

  • Precise Temperature Control: Set each room to your desired temperature – no more guessing with the manual knob.
  • Smart Scheduling: Set different temperatures for different times of day – warm in the morning, lower when you’re at work.
  • Multi-Room Control: Install one on each radiator and control every room independently from your phone.
  • Child Lock: Prevent kids from changing the temperature.
  • Open Window Detection: Automatically reduces heating when it detects a sudden temperature drop (window opened).
  • Battery Powered: 3 x AA batteries – lasts a full heating season.
  • Home Assistant Compatible: Works with ZHA and Zigbee2MQTT.

💡 Pro Tip: Install one in each room and set a schedule: warm up the bedroom 30 minutes before you wake up, lower the living room when you go to sleep. You’ll stay comfortable and reduce your heating bill.

What You Get

Set target temp per room
Bedroom 22°C overnight, living room 24°C in the evening, kid's room 23°C during homework. Each radiator handles its own room independently.
Warm rooms on schedule
Heat the bathroom 15 minutes before your morning shower, then drop the temp once you leave. No more wasted heating on empty rooms.
Open-window detection
When the TRV senses a sudden temperature drop, it stops heating instead of fighting the open window. Saves real money.
Child lock
Lock the physical buttons so curious kids can't twist the temperature up to 30°C while you're not looking.
Battery powered
3× AA batteries last a full heating season. No wiring, no plug - installs in minutes.

A Closer Look

Sonoff Zigbee Thermostatic Radiator Valve

It works with most heating systems, so it should fit what you have at home.

Sonoff Zigbee Thermostatic Radiator Valve

Open Window Detection to Save Energy

Automatically turns off the radiator when ventilating, helping to avoid unnecessary energy waste.

Open Window Detection to Save Energy

Maintain Comfort with External Sensor

Is there a slight temperature difference between the room and around the radiator? You can select a SONOFF Zigbee temp. sensor as the external sensor. When it detects a temperature drop, the radiator immediately turns on, ensuring the room stays warm.

Maintain Comfort with External Sensor

Set Schedules

Set the heating schedule according to your daily needs, which greatly facilitates your life and only heats when needed.

Set Schedules

Compatible with Most Heating Manufacturers

Fits existing ‘M30 x 1.5mm’ radiator valves, and the valve adapters in the package are compatible with most heating systems and manufacturers.

Compatible with Most Heating Manufacturers

Works With

Amazon Alexa
Works
Google Assistant
Works
Apple Home (via Matter bridge)
Works
eWeLink Scenes
Works
Home Assistant (ZHA + Zigbee2MQTT)
Works

Control with the eWeLink app

eWeLink app icon
eWeLink
Set up your Sonoff Zigbee Thermostatic Radiator Valve in minutes - voice control, scenes, automations, away mode.
App Store Google Play
View app

What's in the Box

1× Sonoff Zigbee TRV
Adapters for common European valve threads
User manual (English)

Delivery & Pickup

Standard Delivery
All Lebanon governorates - Greater Beirut usually next day; Tripoli, Jbeil, Saida, Tyre, Zahle, Akkar and the rest within 2–4 working days.
4 $ · Free over 50 $
Express Delivery
Faster shipping - usually within 24 hours of order confirmation (Greater Beirut & Metn). Same-day not guaranteed.
6 $ flat
Pickup - Dekwaneh
Collect from our Dekwaneh store. Weekdays 10am–5pm, Sat 10am–1pm.
3 $ · Free over 30 $

Warranty & Support

6-month Local Warranty
Covers defects in materials & workmanship. Handled here in Lebanon.
WhatsApp Support - Always On
Can't set it up? Message us. We reply within minutes, not days.
14-day Exchange - Unopened Items
The item must be unopened and in its original packaging. Exchange it for a product of equal or higher value - we do not give cash refunds. Opened items are covered by the warranty if there is a factory defect.
Free Setup Call
If you get stuck, we'll walk you through the setup on a free WhatsApp call.

Customer Reviews (1)

5.0
★★★★★
1 review
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Juliano photo review
Juliano
April 2026
★★★★★
Installed the TRVs with temperature sensors and the setup is working great 👌
✓ Verified Purchase

Frequently Asked Questions

Can I return it if it's defective? ›
Yes - if unopened and in original packaging, you can return it. If you've installed it and it's defective, send us a short video showing the install, setup, and the issue. We'll handle the replacement once we confirm.
Do I need an electrician? ›
No - TRVs replace the manual knob on your radiator. Unscrew the old knob, screw on the TRV. About 5 minutes per valve, no tools beyond your hand.
Will it fit my radiator? ›
Fits the standard European M30 × 1.5 thread, which covers most modern radiators in Lebanon. Older radiators or non-European brands may need an adapter - message us with a photo of the existing knob if you're unsure.
What about EDL cuts? ›
The TRV is battery-powered, so it keeps working through outages. Your heating boiler itself needs power obviously, so the schedule resumes once power returns.
Will it work with Home Assistant? ›
Yes - it integrates cleanly with Home Assistant via ZHA or Zigbee2MQTT. Good pick if you're running a self-hosted setup.
How long do batteries last? ›
A full heating season on 3× AA alkaline batteries. The TRV reports battery level in eWeLink so you know when to swap.
Are the manuals in Arabic? ›
The printed manual is in English. If you need help in Arabic, message us on WhatsApp - our team speaks Arabic.

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