Feature: 1. Door and window sensor P1 can sense and judge the opening and closing status of doors and windows in real time, and record opening and closing information through mobile app. 2. Realize linkage control from the global support of homekit products to create richer intelligent life scenarios. 3. After the security mode is turned on, when someone intrudes into the room, the abnormal opening and closing of doors and windows will be detected immediately, and the gateway alarm will be linked, and the smart camera will be turned on to capture the video and send it to your mobile phone. 4. The distance can be adjusted in the third gear, which is suitable for various scenarios. 5. The door and window sensor P1 can be upgraded to adjust the installation distance, and the door and window opening and closing detection is more flexible, which is suitable for most doors and windows. Specification: Features: Door and window sensor P1 can sense and judge the opening and closing status of doors and windows in real time, and record opening and closing information through mobile app. Realize linkage control from the global support of homekit products to create richer intelligent life scenarios. After the security mode is turned on, when someone intrudes into the room, the abnormal opening and closing of doors and windows will be detected immediately, and the gateway alarm will be linked, and the smart camera will be turned on to capture the video and send it to your mobile phone. The distance can be adjusted in the third gear, which is suitable for various scenarios. The door and window sensor P1 can be upgraded to adjust the installation distance, and the door and window opening and closing detection is more flexible, which is suitable for most doors and windows. Specifications: Item: Aqara Door Window Sensor Color: White Shell Material: ABS, PC Communication distance: 30m Battery capacity: 1400mah Wireless frequency: 2.4GHz Wireless Connection: Zigbee 3.0 Size: 77 * 22 * 22mm Packing Size: 9.2*2.6*9.2cm Packing Weight: 65g Package List: 1* Door Window Sensor Package List: 1* Door Window Sensor