Features: 1. No call charges. The 4G LTE gate opener responds to an incoming call from an authorized number and performs the ON/OFF action on the first ring. 2. Modern door control method allows operation by phone call instead of traditional remote controls. 3. Suitable for multiple applications including gates, bollards, barriers, garage doors, shutters, access doors, and machinery. 4. Secure operation using caller ID verification; unauthorized callers are ignored. No need to distribute physical remote controls. 5. Operable from any location with no distance limitation. Add or remove authorized users via SMS. Specifications: - Rated Voltage: 12V DC, 1 A - Working Temperature: -10°C to +60°C - Storage Temperature: -20°C to +60°C - Relative Humidity: 10–90%, 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 connecting door sensors, motion sensors, or other security devices. Triggers SMS alert and siren activation when activated. - 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) - Designed for 4G LTE network connectivity and wide application use - Material: Metal - Color: Blue Package Contents: 1 x GSM Gate Opener