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 upon the first ring. 2. Enables remote operation without traditional methods; door activation is performed remotely via phone call. 3. Multiple applications including gates, bollards, barriers, garage doors, shutters, access doors, or machines. 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 Equipped with two digital inputs for door sensors, motion sensors, or other detection devices; triggers SMS alert and siren activation when input is detected One relay output (6A/240V AC) for connection to door switches or machine controls Relay activation sends SMS confirmation to owner; this feature is user-configurable Designed for 4G LTE network connectivity, suitable for a wide range of remote control applications Material: Metal Color: Blue Package Contents: 1 x GSM Gate Opener