Features: 1.WITH REMOTE SWITCH: GSM gate remote controller with remote switch for making free authorized calls can be operated from anywhere, with no distance restrictions. 2.3A 240VAC OUTPUT: GSM gate opener can be configured with up to 200 authorized phone numbers at a given time. One relay rated at 3A 240VAC output for connection to a door or machine switch. 3.PROGRAMMABLE: GSM door opener adds or removes users via SMS commands. Relay or open time is programmable. 850/900/1800/1900 MHz quad band for use in global GSM networks. 4.RELAY OPERATION: GSM gate access controller is easy to use. Relay operation will return SMS confirmation to or authorized phone, this feature can be passed with no call charges. 5.RANGE OF APPLICATION: GSM gate door opener is suitable for group rooms such as doors, elevators, garages, parking lots, resorts, control rooms, warehouses, and unsupervised rooms. specification:Item Type: GSM Gate Remote Controller Model: G202 Material: ABS Card Slot: NanoSIM Card GSM Frequency: Band 850/900/1800/1900MHz Network: 2G DC Power Supply: 9-36V Antenna: 50 Suitable for doors, elevators, garages, parking lots, resorts, control rooms, warehouses, unsupervised machine rooms and other group type rooms, such as telecommunications operators, on site lighting subframes, on site base stations, traffic controllers and power distribution systems PackageList:1 x GSMGateRemoteController 1 x Antenna 2 x Wiring Terminal 1 x Instruction Manual