Features: 1. No call charges. The 4GLTE gate opener responds to incoming calls from authorized numbers and performs the ON/OFF action upon the first ring. 2. Enables convenient door operation without physical remotes; activation occurs automatically upon detection of authorized calls. 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 individual users. 5. Remotely operable from any location with no distance limitation. Add or remove authorized users via SMS. Specifications: Rated Voltage: 12VDC, 1A Working Temperature: -10°C to +60°C Storage Temperature: -20°C to +60°C Relative Humidity: 10–90%, non-condensing 4GLTE Frequency Bands: B1, B3, B5, B8 Output Relay Contact Rating: 6A/240V AC Supports up to 999 authorized phone numbers Equipped with two digital inputs for connecting door sensors, motion sensors, or other security devices; triggers SMS alerts and siren activation when sensor is activated One relay output (6A/240VAC) for connection to door switches or machine controls Relay activation can send SMS confirmation to the owner; this feature is user-configurable Operates on 4GLTE network for wide compatibility and reliable connectivity Material: Metal Color: Blue Package Contents: 1 x GSM Gate Opener