Features:1. No call charges. The 4GLTE gate opener responds to incoming calls from authorized numbers and performs the open/close action upon the first ring.2. Enables convenient remote access without traditional methods; door operation is initiated remotely via phone call.3. Suitable for multiple applications including gates, bollards, barriers, garage doors, shutters, access doors, and machinery.4. Secure operation using caller ID verification; unauthorized callers are automatically ignored. No need to distribute physical remote controls.5. Operable from any location with no distance limitation. Add or remove authorized users via SMS.Specifications:Rated Voltage: 12VDC, 1AWorking Temperature: -10C to +60CStorage Temperature: -20C to +60CRelative Humidity: 1090%, non-condensing4GLTE Frequency Bands: B1, B3, B5, B8Output Relay Contact Rating: 6A/240V ACSupports up to 999 authorized phone numbersEquipped with two digital inputs for door sensors, motion sensors, or other security sensors; triggers SMS alerts and siren activation when activatedOne relay output (6A/240VAC) for connecting to door switches or machine controlsRelay activation can send SMS confirmation to the owner; this feature is user-configurableOperates on 4GLTE network for wide compatibility and reliable connectivityMaterial: MetalColor: BluePackage Contents:1 x GSM Gate Opener