$20.99 – Aqara T1 Smart Zigbee 3.0 Light Sensor (Banggood, Aliexpress: Aqara T1 Smart Zigbe 3.0 Light Sensor Auto Smart Home Light Detector Brightness Sensor Magnetic APP Control Work with Alexa Google Assistant Homekit (the best price with coupon)).
I have checked all old coupons and price is $20.99 for Aqara T1 Smart Zigbee 3.0 Light Sensor (in Banggood). Just check coupons out (with price alert and history). Best price?
Latest coupon and price update (UTC):
Banggood ($20.99)
Banggood warehouse is located in China. As you can see I didn’t find any active coupon for this product right now… The question is – is it a good price? Pretty sweet, this is the lowest price I have ever noted for this product!
Link: Banggood product page
Price: $20.99
This is the best price ever noted in my database!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
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
Check out price history chart (for all/most countries) for Aqara T1 Smart Zigbee 3.0 Light Sensor. The lowest price was: $20.99.
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)).