Descriptions:  1. Built-in rechargeable battery, the external power off host works normally, worry-free and anti-theft, safe every minute.  2. The host linkage alarm is a powerful upgrade based on the original anti-theft. In addition to anti-theft, it can also have some special needs.    Features:  1. Can be linked with smart switch, can be linked with WIFI camera, multiple siren connection, can be linked with all tuya smart products.  2. Convenient operation, simple installation, remote control of mobile APP.  3. Equipped with a Tuya system, the product is more stable, more powerful, more compatible, and more interactive.  4. When someone enters house, the wireless paired detector is triggered. The detector will send an RF signal to the host, and the host will push a message or make a call to notify the host.  5. When the alarm is removed, it will alarm immediately.  6. The alarm sound of the siren of the host reaches 100 decibels or more, which is deafening and can effectively resist illegal intrusion.  7. It can be armed and disarmed at regular intervals, and automatically prevent theft on time.  8. There is no need for personnel to take care, the alarm phone notification, the host directly dials the phone after the alarm.  9. In the home mode, the door sensor is in the armed state and the infrared detector is in the disarmed state, which is convenient for the owner to move at home.  10. In Away Mode, all detectors are armed.     Specifications:   Type: US/EU (Optional);  Material: Metal&Plastic;  Color: White;  Communication: WiFi;  Scope of Application: Residential Quarters, Buildings, Warehouses, Homes, Garages, Shops;  Alarm Mode: Gsm Alarm, App Alarm Reminder;  Ambient Temperature: -10 ℃ — + 50 ℃;  Ambient Humidity: ≤ 90% RH;  Certification: FCC CE ROHS;     Package Includes:  1 x Alarm Control Panel;  1 x door sensor;  1 x Pir Sensor ( battery not included );  2 x Remote Controller