The Aqara Door and Window Sensor is a smart home security device that detects when doors or windows are opened or closed. This wireless sensor consists of two magnetic components in a sleek white design that can be easily installed on any door or window frame. Key features: • Wireless magnetic contact sensor • Smart home integration capabilities • Compact and minimalist white design • Easy installation with adhesive mounting • Real-time open/close status monitoring • Battery powered operation • Zigbee wireless protocol support The Aqara MCCGQ11LM sensor uses reliable magnetic contact technology to detect the status of doors and windows. When paired with a compatible smart home hub, it can send real-time notifications to your smartphone and trigger automated actions. The device features low power consumption for extended battery life and has a wireless range suitable for most home installations. The slim profile and neutral white color allow it to blend seamlessly with most door and window frames.