1、Open/close detection, protect your home with reliable open/close detection of door, window, cabinet and drawer. 2、Real-time notification, when the door and window of the home are accidentally opened, immediately notify via smartphone or laptop. 3、For Tuya WIFI smart door sensor can be connected with other devices that support for Tuya to create a smart home life. 4、Personalize your alarm device, and automatically turn on the welcome light when the front door opens at night. When the rear door opens accidentally, the alarm siren is triggered. 5、The battery alarm means continuous communication and protection, while the stylish, compact design means that only you will know where it is. Item Type: Window Door Alarm Material: ABS Color: WhitePower Supply Mode: USB power supply 5V/1A (Built-in battery) Backup Battery: CR123A 250mAh Wireless Frequency: 2.4GHz Wireless Protocol: IEEE 802.11b/g/n 1 x Door Sensor Host 1 x Door Sensor Auxiliary Body 1 x Data Cable 1 x Screw Pack 2 x Double-Sided Tape 1 x Manual