Features: 1. No call charges. The 4GLTE Gate Opener rejects calls from authorized numbers and performs the ON/OFF action on the first ring. 2. Opening the door has become more interesting, now you can open it by simply shaking it. 3. Versatile applications. (suitable for gates, bollards, barriers, garage doors, shutters, and access doors or machines). 4. Secure - Identifies callers using caller ID; unknown callers are ignored; eliminates the need for a remote control for various users. 5. Operable from any location, with no distance limitations; users can be added or removed via SMS text. Specification: Rated Voltage: 12VDC 1 A Working temperature: -10~+60 Storage temperature: -20~+60 Relative humidity: 10-90%, no condensation 4GLTE frequency: B1 B3 B5 B8 Related Voltage of the Output Relay: 6A/240V AC Up to 999 authorized phone numbers can be configured; Two digital inputs for door sensors, motion sensors, or other sensors to enhance your door and window security, triggering an SMS alert and starting the siren immediately upon activation; One output with a relay rating of 6A/240VAC for connecting to door switches or machines; The relay action will send an SMS confirmation to the owner, and this functionality can be customized by the user; Based on 4GLTE Network, suitable for various applications. Material: Metal Color: Blue Package Contents: 1 x Gsm Gate Opener Only the above package content; other products are not included. Note: Light reflection and different displays may cause the item's color in the picture to differ slightly from the actual product. The allowed measurement error is +/- 1-3cm.