$18.59 – Tuya WiFi Smart Temperature Humidity Sensor (Banggood, Aliexpress: Tuya WiFi Smart Temperature Humidity Sensor Indoor Thermometer Hygrometer Meter with LCD Display Screen Detector APP Remote Monitoring Support Alexa Google Home (the best price with coupon)).
You can get Tuya WiFi Smart Temperature Humidity Sensor for $18.59 with coupon (from Banggood). Basically copy coupon, view price history or create e-mail price alert. What is the best price?
Latest coupon code price check (UTC time):
Banggood ($18.59)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. You probably want to know if this is a good price. Good price! It’s lower than average one ($18.83)!
Link: Banggood product page
Price: $18.59
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): BG1bba93
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
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
Do you need price history chart (for all/most countries) for Tuya WiFi Smart Temperature Humidity Sensor? There we go. The lowest price was: $18.49.
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)).