... GSM+PSTN alarm system with LCD display and touch keypad 1. Touch screen and keypad, LCD displays of date, week, time, and current alarm ... back.6. Arm/Disarm the system by 5 ways: SMS, alarm panel keypad, wireless keypad, ... voltage Indicators8. Learning/coding wireless sensors to alarm host, very easy operation.9. Support ... line , 1 manual NEW GSM+PSTN alarm system with LCD display and touch keypad