Features: 1.Remote On Or Off Switch: 4G gate opener with remote on or off switch for toll free authorized calls that can be operated from anywhere, with no distance restrictions, for use on global networks. 2.Support 200 Authorized Phone Numbers: 4G gate controller opener supports up to 200 authorized phone numbers at a given time. Rated at 3A 240V AC output for connection to a door or machine switch. 3.SMS Commands: G202 GSM remote control has Caller ID recognition and ignore unknown callers features. Users can be added or deleted using SMS text commands, eliminating the need for a remote control or buttons for different users. 4.Programmable: G202 GSM gate opener can add or remove users using SMS text commands. The opening time of the relay is programmable. Relay operation returns SMS confirmation to or authorized phone, and this feature can be passed with no call charges. 5.Applicable: GSM door gate opener is suitable for group rooms such as doors, elevators, garages, parking lots, resorts, control rooms, warehouses, unsupervised rooms, such as telecom operators, field lighting subframes, field base stations, traffic controllers and power distribution systems. specification:Item Type: 4G Gate Opener Material: ABS Card Slot: Nano SIM Card Network: 2G, 3G, 4G Frequency: GSM: B3/B5/B8 (1800/850/900) CDMA: BCO (800MHZ) WCDMA: B1/B5/B8 (2100/850/900) FDD: B1/B3/B5/B7/B8/B20 (2100/1800/850/2600/900/800) TDD: B38/B39/B40/B41 (2600/1900/2300/2500) DC Power Supply: 9-36V Antenna: 50 PackageList: 1 x 4G Gate Opener 1 x Antenna 3 x Wiring Terminal 1 x Instruction Manual