Features: 1. No call charges. The 4GLTE 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 by simple actions, enhancing user experience. 3. Multiple applications: suitable for gates, bollards, barriers, garage doors, shutters, access doors, or machines. 4. Secure operation using caller ID identification; unknown callers are automatically ignored. No need to distribute remote controls to different users. 5. Operable from any location with no distance limitation; add or remove 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: 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 sensors; when triggered, sends an SMS alert and activates the siren immediately One relay output (6A/240VAC) for connecting to door switches or machines Relay activation can send an 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