Features: 1. No call charges. The 4G LTE gate opener rejects calls from unauthorized numbers and executes ON/OFF commands upon the first ring from an authorized number. 2. Modern, hands-free operation—no physical remote required. 3. Compatible with multiple applications: gates, bollards, barriers, garage doors, shutters, access doors, and industrial machinery. 4. Secure access control—uses caller ID for user identification; unknown callers are automatically ignored. No physical remote controls needed for individual users. 5. Remote operation from anywhere with no distance limitations. 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 Output Relay Rating: 6 A / 240 V AC Supports up to 999 authorized phone numbers. Two digital inputs for door sensors, motion sensors, or other safety devices—triggers SMS alerts and activates siren when triggered. One relay output (6 A / 240 V AC) for connecting to door or machine control switches. Relay activation sends an optional SMS confirmation to the owner (user-configurable). Built on 4G LTE network technology for reliable, wide-area connectivity. Housing Material: Metal Color: Blue Package Includes: 1 × GSM Gate Opener Note: Actual product color may vary slightly due to screen settings and lighting conditions. Dimensions are subject to a tolerance of ±1–3 cm.