This GSM door opener has the function of remote switch. It can be operated from anywhere by authorized telephone call free of charge.
There is no distance limit and it is very convenient. GSM Intelligent box size and very thin, can be easily mounted in a Panel of target system to add the characteristics of GSM Alarm. When any alarm input is triggered, SMS alarm messages will be sent to up to six preset phones. Any input from S1 to S8 is a shorted to GND and activates the alarm.The Alarm can be customized with your SMS text, compatible with SMS Alarm, Alarm of telephone call. The product is small, flexible and easy to carry, so you can easily take it where you need it, fix it, and it will work for you. Features: This GSM door opener has the function of remote switch. Specifications: Voltage: DC5V Channels: 8 Model: GA09 Communication interface: wireless Alarm Type: SMS Equipment Configuration: Door/Window Sensors Working frequency: GSM (2G) 850/900/1800/1900 MHz Size: 6.66.22.2cm/2.62.40.8in Package Weight: 94g/3.3oz Package List: 1 GA09 Alarm Box Antenna 1 Cable with a Connector Piece.