$20.99 – Aqara T1 Smart Zigbe 3.0 Light Sensor Auto Smart Home Light Detector Brightness Sensor Magnetic APP Control Work with Alexa Google Assistant Homekit.
When I was updating this page, then coupon price was $20.99 for Aqara T1 Smart Zigbee 3.0 Light Sensor (in Banggood). You can create price alert here, copy coupons and view price history. What is best price?
Latest price update (UTC time):
Banggood ($20.99)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. Good or bad price? This price is great, coz it’s the lowest in CouponsFromChina database!
Link: Banggood product page
Price: $20.99
Additional Banggood coupons: first page and second page
This is the best price ever noted in my database!
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.
Price history and price alert
Do you need price history chart (for all/most countries) for Aqara T1 Smart Zigbee 3.0 Light Sensor? There we go. 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)).