Updated: 18-12-2025.
Wireless Key Smart Light Control
Banggood warehouse: China.
Discount price $22.94 with coupon: BGSHOM15
Discount price $24.29 with coupon: BGHONEY2110
Additional Banggood coupons:
1. First page
2. Second page
I could not find it on Aliexpress. Click here to search by yourself.
Price history and price alert
Here is price history (for all/most countries) for Xiaomi QBKG03LM Aqara Double Wall Switch Neutral Line. The lowest price was: $16.99.
Price records source(s): Gearbest, 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)).