Wifi GSM Home Burglar Security Alarm System Intercom 433MHz Wirelesss Sensor Alarm Remote Control Auto Dial Siren Sensor Kit ,Safety Security

We can offer power , please leave message if you need change the power adapter. The manual book only support English & Russian recently Other language manual book is in translating Built-in siren,Built-in loudly alarm siren. No need to add additional wired siren. APP Control,After connect to wifi router through mobile APP settings, then you can remote control the device anywhere and anytime. Doorbell Function,No need to install extra doorbell button on the wall. there is a doorbell button on the APP, you can press the doorbell anytime and anywhere.