This item must match the Xiaomi multifunctional gateway to use, real-time detect the temperature and humidity condition, app control, Temperature measuring accuracy is -0.3 – 0.3 degree, Humidity measuring accuracy is -3 – 3 percent, Powered by 1x 3V CR1632 button battery (included).
Price history, coupons and price alert are available on this page. What is best price?
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.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($12.59): BGAFF10OFF
2. ($12.99): 13f142
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): 20XMAQ, 939404, affiliate6, aff7off, bgssaff9, BGaDmITAd, BGXMTH09, BGBFAFF2019, BGCITYADS2019, BGSORRA, 2020CNY, BGVDay10%off, BGAQ20, BGHOMEAPP, BGSMARTHO, BGXMTEM, bGhOnEy10, BGSM15, BGSMOFF, BgcLuBofErtA10
(these codes were not working in latest coupon update, but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Xiaomi Mi Temperature and Humidity Sensor [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi Mi Temperature and Humidity Sensor. The lowest price was: $5.39.
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)).
. I can’t find any active coupons for this product in Banggood.![Price history for Xiaomi Mi Temperature and Humidity Sensor [EU]](https://couponsfromchina.com/pricehistory/History19843.png "Xiaomi Mi Temperature and Humidity Sensor [EU] price history")