NEW GSM+PSTN alarm system with LCD display and touch keypad 1. Touch screen and keypad, LCD displays of date, week, time, and current ... greeting back.6. Arm/Disarm the system by 5 ways: SMS, alarm panel keypad, wireless keypad, Remote control, or even remotely by phones. (PSTN ... supply, 1 phone line , 1 manual NEW GSM+PSTN alarm system with LCD display and touch keypad