1. Built-in battery, used for alarm when 12V power supply fails 2. With a USB programming board, you can set 1000 numbers at one time through the software, saving a lot of SMS setting fees 3. Built-in a hidden one-way alarm input, which can be connected to a switch signal for alarm 4. Suitable for various automatic doors, electric doors, garage doors and other automatic access control systems 5. This version is a 2G version, not a 3G or 4G version, please confirm whether the relevant country can use it before purchasing 6. Digital output: NC/NO 7. DC power supply: 9-15V DC/2A 8. Power consumption: 12V MAX 9. Input: 50mA/average 25mA 10. Antenna: 50Ω SMA antenna interface 11. Temperature range: -20~+60 degrees Celsius 12. Humidity range: relative humidity 90%
