... way voice communication. 4.The system supports the GSM cell phones, no need the fixed telephone line. 5.Can set HOME arm/AWAY ... system 9.Using remote controllers, you can arm, disarm, panic from long distance. 10. Can control the system by using a telephone or ... up battery, when the power is off, it still can work about 24 hours. 14, With output relay, can control the home applianceStandard components1 ...