Features: 1. No call charges. The 4G LTE gate opener rejects the call from an authorized number and performs the ON/OFF action on the first ring. 2. Modern door operation method allows control via mobile network, eliminating traditional manual or remote methods. 3. Multiple applications including gates, bollards, barriers, garage doors, shutters, access doors, and machines. 4. Secure operation using caller ID verification; unknown callers are ignored. No need to distribute physical remote controls to users. 5. Operable from any location with no distance limitations. Add or remove authorized users remotely via SMS. Specifications: - Rated Voltage: 12V DC, 1 A - Working Temperature: -10C to +60C - Storage Temperature: -20C to +60C - Relative Humidity: 1090%, non-condensing - 4G LTE Frequency Bands: B1, B3, B5, B8 - Output Relay Contact Rating: 6A / 240V AC - Supports up to 999 authorized phone numbers - Two digital inputs for door sensors, motion sensors, or other security sensors; triggers SMS alert and siren activation when activated - One relay output (6A / 240V AC) for connecting to door switches or machine controls - Relay activation sends SMS confirmation to owner; this feature is user-configurable - Operates on 4G LTE network for wide compatibility and reliable connectivity Material: Metal Color: Blue Package Contents: 1 x GSM Gate Opener