Xiaomi Smart Door Window Sensor 2 (MCCGQ02HL)

The Xiaomi Smart Door Window Sensor 2 from the well-known Chinese smart gadget brand was announced in 2021. This smart device operates on the principle of magnetic induction and is designed for seamless integration into the Xiaomi Home ecosystem for convenient control and interaction with other smart home components. It has a versatile purpose for household use: monitoring the opening of windows, doors, pet carriers, a refrigerator, a safe, a box, and more.

The device stands out for ultra-low power consumption and runs on a CR1632 battery even at temperatures down to -10 °C. An additional light sensor lets you set up secondary functions—turning on outdoor or indoor lighting in the evening or when an opening is detected. It syncs with your smartphone via Bluetooth, then sends alerts and keeps an event log through the app.