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, 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 door sensors, motion sensors, or other security sensors; triggers SMS alerts and siren activation when activated One relay output (6A/240VAC) for connecting 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