Price history, coupons and price alert are available on this page. You probably want to know what is the best price?
Detection angle: about 130°, Detection distance: about 7m, Product model: RTCGQ02LM, Product net weight: 19g (without bracket), Working temperature: -10℃- 50℃, CMIIT ID: 2020DP12044, Wireless connection; bluetooth version 5.0, Battery type: CR2450, Product size： φ30.2x 33.3mm (without bracket)
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
2021 Newest Xiaomi Mijia Motion Sensor 2 Human Body Sensitive Ambient Light Dark Transducer Bracket Bluetooth Work With Mijia | $14.53 | – |
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. I found coupon for you. Check this out.
Link: Banggood product page
1. ($18.69): BGSmart6
apply it 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): BG15SH12, BGSTHO15, BGXMNEW02, BGXMHSG, BGXMHUSOR, BGHONEY2110, BG218307, BGSHOM15, BGSHE15, 13f142, BG0f6d3b, BGce29b8, BGCL887, BG6c8cbc, BGba1eee, 6GSGIT, BGD11037, ADMITAD2212
(there’s a little possibility that old coupon will work)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi RTCGQ02LM Human Body Sensor.
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)).