Setting temperature range: 5~35°, Accuracy: 0.5°C, Surface temperature: 90℃ Max (at the radiator), Size: about 58.4*97*58.4mm/2.30*3.82*2.30inch, Version: Zigbe / WiFi (optional), Power: 3x 1.5 V AA batteries (not included), Voice Control: for Amazon Alexa / Google Assistant, Application: Tuya Smart/Smart Life APP, Protection class: IP 20, Linear stroke: 4.3 mm, Storage temperature: -5~ 45 °C, Connection: m30*1.5mm.
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Updated: 01-08-2025
Banggood
Warehouse in China.
Link: Tuya ZigBee Thermostatic Radiator Valve
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons:
1. First page
2. Second page
Price history and price alert
Do you need price history chart (for all/most countries) for Tuya ZigBee Thermostatic Radiator Valve? There we go. The lowest price was: $24.99.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).