1.PSNT Alarm 2.lcd touch screen Touch keypad; LCD displays Date, Day of the week, Time, and current Armed ... \ Disarm the system by 5 ways: SMS, Main Host(Keypad), Wireless Keypad, Keychain Remotes, or even remotely by phones. (PSTN alarm don’t support ... ~ 50ºC Humidity: <80%Product dimension:150×107×26(mm) PSTN Wireless Alarm System (LCD Touch Screen)