$30.99 – Tuya WiFi+RF433 Temperature & Humidity Sensor Sets Screen Display Monitor Main Sub devices Kits Works With Alexa Google Home – Kit.
When I was updating this page the price was $30.99 for Tuya WiFi+RF433 Temperature Humidity Sensor Set (in Banggood). You can create price alert here, copy coupons and view price history. Best price?
Latest price update (UTC time):
Banggood ($30.99)
Banggood warehouse is located in China. But wait a sec… Is it a good price? Looks like this is great price. I didn’t track lower than that in CouponsFromChina database ever. You can get coupon down below.
Link: Banggood product page
Price without coupon: $33.99
1. ($30.99): BG6de9a8
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
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.
Price history and price alert
Check out price history chart (for all/most countries) for Tuya WiFi+RF433 Temperature Humidity Sensor Set. The lowest price was: $30.99.
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)).