Features: 1. No call charges. The 4G LTE gate opener responds to an incoming call from an authorized number and performs the ON/OFF action upon the first ring. 2. Enables convenient door operation without traditional remote controls. 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 ignored. No need to distribute remote controls to users. 5. Remotely operable from any location without distance limitations. Add or remove authorized users via SMS. Specifications: - Rated Voltage: 12V DC, 1 A - Working Temperature: -10°C to +60°C - Storage Temperature: -20°C to +60°C - Relative Humidity: 10–90%, 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 can send SMS confirmation to the 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 (Other items not included) Note: Lighting and display settings may cause slight color variations between the product image and actual item. Measurement tolerance: +/- 1–3 cm.