Automatic voice prompt or SMS message notify the location and events upon alarm. Compatible with wireless PIR sensor, door sensor, smoke detector, gas detector, panic button etc. After receiving an alarm, host will display the alarm zone and alarm siren 80dB on site, 110dB alarm when connect with wired siren, while text to and dialing the number preset to inform user via WIFI. It has been widely used in home, factory, school, shop, villa and residential area to provide protection for valuable assets.