Features: 1. No call charges. The 4G LTE 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 via smartphone, eliminating the need for traditional remote controls. 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 issue remote controls to users. 5. Operable from any location with no distance limitations. Add or remove users remotely via SMS. Specifications: Rated Voltage: 12V DC, 1 A Working Temperature: -10C to +60C Storage Temperature: -20C to +60C Relative Humidity: 1090%, non-condensing 4G LTE Frequency Bands: B1, B3, B5, B8 Output Relay Contact Rating: 6A / 240V AC Supports up to 999 authorized phone numbers Two digital inputs for door sensors, motion sensors, or other security devices; when triggered, sends an SMS alert and activates the siren One relay output (6A / 240V AC) for connecting to door switches or machine controls Relay activation can send SMS confirmation to the owner (user-configurable function) Designed for use with 4G LTE networks across a wide range of applications Material: Metal Color: Blue Package Contents: 1 x GSM Gate Opener Note: Other items not included Note: Lighting and display settings may cause slight color variations between the product image and actual item. Dimensional variations of +/- 13 cm may occur due to manual measurement.