Features: 1. No call charges. The 4G LTE gate opener responds to calls from authorized numbers and executes ON/OFF commands upon the first ring. 2. Convenient operation — open the gate by shaking your smartphone (via compatible app or motion-triggered command). 3. Versatile compatibility — suitable for gates, bollards, barriers, garage doors, shutters, access doors, and industrial machinery. 4. Enhanced security — uses caller ID verification; unauthorized callers are automatically rejected. No physical remote controls required for user access. 5. Remote operation — works from anywhere with cellular coverage. Add or remove authorized users via SMS. Specifications: - Rated Voltage: 12 VDC, 1 A - Operating 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 - Relay Output Rating: 6 A / 240 V AC - Up to 999 authorized phone numbers可 configured - Two digital inputs for door sensors, motion sensors, or other security devices — triggers SMS alerts and siren activation when triggered - One relay output (6 A / 240 V AC) for controlling gate motors, door switches, or machinery - SMS confirmation sent upon relay activation (user-configurable) - Built on 4G LTE network technology for reliable, wide-area connectivity Material: Metal Color: Blue Package Contents: 1 × GSM Gate Opener