Measuring range: 32 – 42 Deg.C, Error range: 0.1 Deg.C (35 – 39 Deg.C), 0.2 Deg.C (less than 35 Deg.C, or more than 39 Deg.C), Operation environment: 5 – 40 Deg.C, less or equal to 85 percent RH, Built-in 1x button battery.
Price history, coupons and price alert are available on this page. You probably want to know what is the 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. ($6.43): MVC8SPRING
2. ($6.57): BG00c906
3. ($6.57): BGHB218
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/i1u
Old coupons (from the oldest to the newest): 502C6B, code1573, CODE1573, BGbabyTM, BGHOMEG12, AFfbG10, BGbbtt28, BGmat58, FBCOUPON1, BGAFF10OFF, bGhOnEy10, BGdragonBoat, bgshOOp10, BgoFErTaSchInA10, BGHOMEA15%, BgcLuBofErtA10, BGCuponation10, 13f142, BGHONEY2110, BGZX926, BANGGOODSD, 00c906, BGHealth10D, 2022ACTIESNL
(there’s a little possibility that old coupon will work)
Price history and price alert
Price history (for all/most countries) for Xiaomi MiaoMiaoCe Digital Baby Thermometer is here. The lowest price was: $6.43.
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)).