When I was updating this page, then coupon price was 16.99 USD for Tuya IR Smart Digital Temperature Humidity Sensor (in Banggood). Go down and check coupons out. Remember to check price history if it is available. Do you want to know what the best price is?
Latest coupon and price update (UTC):
Banggood (16.99 USD)
Banggood warehouse is located in China. As you can see I didn’t find any active coupon for this product right now… Low/high price? Let’s see… Average price for this item is 17.83 USD and current one is 16.99 USD, so it’s a good price!
Link: Banggood product page
Price: 16.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): Cuponation9, BGRTYIRCN
(these coupons are old, so probably won’t work)
Aliexpress
There’re some similar items on Aliexpress in my database. There may be some other items though.
More on Aliexpress…Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for Tuya IR Smart Digital Temperature Humidity Sensor? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).