... CE & RoHS certificate NEW GSM+PSTN alarm system with LCD display and touch keypad 1. Touch keypad: Bule back ... -up light; LCD display date, day of the week, Time, and current ... , Main Host(Keypad), Wirless keypad, keychian remotes, or even remotely by phones. (PSTN alarm don't support ... backup battery, it will alert when low power or without external power supply. 13. Store up to ...