This deal made my spreadsheet cry: $88.66 (coupon active at Banggood). Updated: 07-01-2026.
4Pcs SONOFF TRVZB Smart Zigbee3.0 Thermostatic Radiator Valve Intelligent Thermostat Temperature Controller APP&Voice Control Work with Alexa Google Home
Banggood warehouse: China.
Regular price: $99.99
Discount price $88.66 with coupon: BG6adf14
Discount price $88.66 with coupon: BGc3afd5
Discount price $88.66 with coupon: BG91ea67
Additional Banggood coupons:
1. First page
2. Second page
Country-specific coupon codes:
1. Poland
Published on 23.9.2025, $92.99: BGea5b20
Other warehouses/versions
1 another warehouse/version in my CouponsFromChina database:
1. Europe
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Price history and price alert
Price history (for all/most countries) for 4Pcs SONOFF TRVZB Smart Zigbee3.0 Thermostatic Radiator Valve is here. The lowest price was: $88.66.
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)).