$14.99 – Tuya WiFi Infrared PIR Motion Sensor (Banggood, Aliexpress: Tuya WiFi Infrared PIR Motion Sensor Security Protection Presence Sensor Detector Burglar Sound Alarm Smart Life Work with Alexa (the best price with coupon)).
Use coupon and get Tuya WiFi Infrared PIR Motion Sensor for $14.99 (from Banggood). Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the best price?
Latest coupon and price update (UTC):
Banggood ($14.99)
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood). Is it a reasonable price for this item? Hmmm, price is higher than average (which is $14.24 right now), so better set price alert down below…
Link: Banggood product page
Price: $14.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG589b2e
(I don’t think these’re gonna work, but you can try ’em out anyway)
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 PIR Motion Sensor? There we go. The lowest price was: $13.99.
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)).