... automatic message recording;n Built-in artificial intelligent digital voice announcer;n Built-in artificial intelligent English message;n Users can make ... like a telephone;n One-key-control function: Out Arm, Home Arm, Remote Arm;n SOS, fire, gas, door, hall, window ... like a telephone;n One-key-control function: Out Arm, Home Arm, Remote Arm;n SOS, fire, gas, door, hall, window ...