... ****It own burglarproof,fire,emergency alarm** Features of gsm sms alarm kit:Intelligent GSM home gsm alarm kit,AC Power Off Inform ... power both available5 Arm/Disarm ways of gsm sms alarm kit: Remote Controller, Host Keypad , Remote Controlling Keypad(options) , ... and SMS Internal&external antenna gsm intruder sms alarm kit Optional Technical Parameter:Main unit ParameterGSM frequency 900/1800MHZ ...