Xiaomi Mijia Smart Door Window Sensor 2 ($17.99)

Current deal powered by caffeine and algorithms: $17.99 – Banggood. Battery: CR2032(Built-in), Name: Door & Window Sensor 2, Working Humidity: 0%-95%RH, Wireless Protocol: bluetooth 5.1 BLE, Working Temperature: -10℃-50℃, Size: 34*32.7*14.5mm.
Updated: 08-09-2025

Banggood

Warehouse in China.
Link: Xiaomi Mijia Smart Door Window Sensor 2
Price: $17.99

Additional Banggood coupons:
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Aliexpress

There’re some similar (or not) items on Aliexpress

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