The phone is also used in the robbery alert system.
This device is located either on the control panel or as a standalone device in the robbery system This device dials through a fixed line or a mobile phone. Usually, it is possible to store several phone numbers on this device.
When the server is activated, the server automatically dials the stored numbers until the interrupt is activated, and if it does not respond automatically, it will communicate with the next numbers.
This device is equipped with two wires for connecting the voltage and two wires for connecting the telephone line.
There is also a wired shield called a stimulator that connects to the control panel.
In systems that use the line, the telephone wires must be installed where the SIM card of the mobile phone is installed.