... ,then play the greeting back. 8.arm/disarm the system by 5 ways :SMS,main host(keypad),wireless keypad ... don’t support SMS) 9.available in AC/DC with low-voltage indicators. 10.learning sensors to alarm host ... .check door/window status automatically(this is when the system is dis armed ony,if a door is opened, ... pc. …Power Adaptor ~1 pc. Home Security GSM Alarm System wireless With LCD Touch Keypad CE,FCC