1Handfree asking for help
2Special picture design buttons that make user easy to remember and operate
3Asking for help automatically, connect alarm phone call firstly
4Wired/wireless remote call for help
5Check the telephone line in connection or disconnection
6Battery low power remind
7Control panel is in compellent arm condition, once connect with power, it can work normally
8Li-battery is optional, adding $3.8 more.
9Standard Unit: One contral panel+one telephone line+one power adapter + one ribbon+one panic button"