VSTAR wireless home security systems G70-GT 1.GSM/PSTN dual network 2.one key ... panel, just like a telephoneOne-key-control function: Out Arm, Home Arm, Remote ArmSOS, fire, gas, door, hall, window, balcony, and ... to add additional wireless accessoriesRemote control Arm, Disarm, Monitor, and Intercom by phoneBuilt-in AAA NI-HI rechargeable battery: make alarm ...