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 control functionality with advanced remote access capabilities. 3. Multiple applications including gates, bollards, barriers, garage doors, shutters, access doors, and machines. 4. Secure operation using caller ID identification; unknown callers are ignored. No need to distribute remote controls to users. 5. Operable from any location without distance limitations. Add or remove authorized users via SMS. Specifications: Rated Voltage: 12VDC 1A Working Temperature: -10C to +60C Storage Temperature: -20C to +60C Relative Humidity: 1090%, 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; when triggered, sends an SMS alert and activates the siren One relay output (6A/240VAC) for connecting to door switches or machine controls Relay activation can send an SMS confirmation to the owner; this feature is user-configurable Designed for 4GLTE network connectivity, suitable for a wide range of automation applications Material: Metal Color: Blue Package Contents: 1 x GSM Gate Opener