Get coupons, create price alert or check price history out! What is the best price?
temperature accuracy: 0.1 degrees, humidity accuracy: 0.1 percent RH
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($14.44): BGherra
2. ($14.44): BG834294
3. ($15.99): 13f142
4. ($15.99): BG11SHOP
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): bgsport, 87c97f, 502C6B, 15NATURE, BGTR15, BGBG4683, BGFDJ, BGMPB2020, BGAFF10OFF, bGhOnEy10, BGBG7937
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Xiaomi Temperature Humidity Sensor [EU] ($-3)
Price history and price alert
Price history (for all/most countries) for Xiaomi Temperature Humidity Sensor is here.
Price records source(s): Gearbest, 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)).