Feature: 1. The scene alarm is loud and the volume is adjustable at 4 levels (set on the APP). When the doors and windows are opened after the installation, the alarm will sound up to 120DB. 2. Window door detector can be used as a doorbell at home, reminders of visitors, turn on the alarm mode when going out, and take care of nursing home. 3. Check the status of the doors and windows, check the APP at any time, and check whether the doors and windows at home are closed. 4. Timing arming and disarming, you can set door and window alarms according to your own work and rest time. 5. Add a new password to disarm, when you forget to bring your phone, you can enter the password to disarm, no need to worry about being manually disarmed 6. Multiple connections, safe sharing. One mobile phone can add multiple alarms, and one alarm can be connected to multiple mobile phones to guard the whole home in all directions Specification: Item Type: WiFi door alarm Material: ABS Uses: Residences, villas, apartments, rental houses, etc. Battery: 1.5V 2 x AAA battery (excluded) Alarm Decibel: 120DB Communication Network: WiFi APP: For tuya. Package List: 2 x Door Sensor2 x Sticker2 x Screw2 x Expansion Tube1 x Manual