Features: 1. No call charges. The 4G LTE gate opener responds to incoming calls from authorized numbers and performs the ON/OFF action on the first ring. 2. Convenient hands-free operation allows door control without traditional remote controls. 3. Multiple applications including gates, bollards, barriers, garage doors, shutters, access doors, and machinery. 4. Secure operation using caller ID authentication; unknown callers are automatically ignored. No need to distribute physical remote controls. 5. Remote operation from any location with no distance limitations. Add or remove authorized users via SMS. 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 Equipped with two digital inputs for connecting door sensors, motion sensors, or other security devices. When triggered, sends an SMS alert and activates the siren. One relay output (6A / 240V AC) for connecting to door switches or machine controls. Relay activation can send an SMS confirmation to the owner; this feature is user-configurable. Operates on 4G LTE network for reliable connectivity across various applications. Material: Metal Color: Blue Package Contents: 1 x GSM Gate Opener Note: Other items shown are not included. Note: Lighting and display settings may cause slight color variations between the product and images. Dimensional variations of 13 cm may occur due to manual measurement.