Features: 1. No call charges. The 4G LTE gate opener detects an incoming call from an authorized number and performs the ON/OFF action on the first ring. 2. Modern door control solution with shake-to-open functionality for added convenience. 3. Multiple applications including gates, bollards, barriers, garage doors, shutters, access doors, and machinery. 4. Secure operation using caller ID verification; unknown callers are automatically ignored. No need to distribute remote controls to users. 5. Operable from any location with no distance limitations. Add or remove authorized users via SMS commands. 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 compatible with door sensors, motion sensors, or other security sensors. Triggers instant SMS alerts and siren activation when activated. - One relay output (6A / 240V AC) for connecting to door switches or machine controls - Relay actions can send SMS confirmation to the owner; this feature is user-configurable - Built on 4G LTE network technology for reliable connectivity across various applications - Material: Metal - Color: Blue Package Contents: 1 x GSM Gate Opener Note: Other accessories shown in images are not included. Note: Lighting and display settings may cause slight variations in color between the product and photos. Dimensional variations of +/- 13 cm may occur due to manual measurement.