$12.99 – Tuya WiFi Infrared Motion Sensor (Banggood, Aliexpress: Tuya Smart WiFi Infrared Detectors Sensor Alarm System Motion Detector PIR Sensor Alarm Smart Life APP Remote Control (the best price with coupon)).
When I was updating this page, then coupon price was $12.99 for Tuya WiFi Infrared Motion Sensor (in Banggood). Go down and check coupons out. Remember to check price history if it is available. What is the best price?
Latest price update (UTC time):
Banggood ($12.99)
Banggood warehouse is located in China. There are no coupons for this product in Banggood. You probably want to know if this is a good price. From what I can see this price is higher than average price ($12.40).
Link: Banggood product page
Price: $12.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG589b2e
(probably won’t work, but you can try them out)
Aliexpress
There’re some similar (or not) items on Aliexpress
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 Infrared Motion Sensor? There we go. The lowest price was: $11.99.
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)).