Aqara's Contact T1 AQ-SNSR-CONTACT-T1 Door and Window Sensor T1 is designed to detect whether doors or windows are open or closed by measuring the distance between the sensor unit and the magnet. It uses very little energy and can be easily installed without requiring any tools. Simply stick the sensor to the desired location and use it in a variety of different ways. Key Features Security Notifications Multi-Ecosystem Support Energy-efficient

*Requires AQ-HUB-E1, AQ-HUB-M1S-G2, AQ-HUB-M2, AQ-HUB-M3, AQ-HUB-CAM-G2H-Pro, AQ-HUB-CAM-G3*