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. Enables convenient remote operation for gates and similar devices. 3. Multiple applications including gates, bollards, barriers, garage doors, shutters, access doors, and machines. 4. Secure operation using caller ID; unknown callers are ignored. No need to distribute remote controls to users. 5. Operable from any location with no distance limitations. 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 to monitor doors and windows. When triggered, sends an SMS alert and activates the siren immediately. 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 use with 4GLTE network connectivity across various applications. Material: Metal Color: Blue Package Contents: 1 x GSM Gate Opener