This intelligent door / window sensor senses the opening and closing status of door and window by detecting the proximity and separation of magnets. Alarm information can be uploaded through Zigbee protocol in wireless IOT mode. Records can be uploaded to realise the securitydetection of the monitored objects. This product is suitable for home residence, building villa, factory, shopping mall, offce building and so on. Features: Long term door opening/closing records, supporting real-time viewing of family door opening/closing records within thepast 7 days, and visually displaying time records. If the battery level is low, the sensor will push a notification through the app to remind you to replace the battery in a timely manner. You can choose to receive door opening/closing reminders according to your needs, ensuring that you are not disturbed by frequent notifications. It can be linked with intelligent alarms, protects family safety. Easy and convenient to install and remove. The app is easy to operate and can share devices with family members to jointly monitor connected devices. Specifications: Main color: white Main material: plastics Operating temperature: -10 to 50 AlarmTrigger distance: 205mm Battery: 1 * CR2032, 3V, 240mAh Host size: 40 * 26 * 13mm / 1.6 * 1.0 * 0.5inin Magnet size: 26 * 10 * 11mm / 1.0 * 0.4 * 0.4in Package size: 55 * 55 * 23mm / 2.2 * 2.2 * 0.9in Package weight: 40g / 1.4ounce Packing List: 1 * Host 1 * Magnet