Xiaomi - Mi - Door and Window Sensor 2

2-in-1 functionality: This sensor combines a light sensor and an open/close sensor.
Event history: You can view your event history via your smartphone, including notifications when doors and windows are opened or closed.
Synchronised notifications: When connected to a smartphone via Bluetooth, you receive notifications about the status of the sensor.
Low light detection: The sensor reacts to darkness and can initiate a scenario to switch on the night light.
Temperature and humidity: You can set up alerts for uncomfortable temperature and humidity levels.
Easy installation: The sensor is easy to install with double-sided adhesive tape.