Wireless Alarm Communicator (cellular back-up radio) is a device which can be added to
your system as a back-up method of getting alarm signals to the monitoring station.
Usually alarm signals are sent to the monitoring station via a phone line. However,
because phone lines are not always reliable, you can also choose to add a cellular back-
up radio which will send signals to the monitoring station if your phone line is cut or
otherwise not working. This is highly recommended for a more secure system. These
units can also be your primary method of communicating to the monitoring station if you
have no phone line on the premises.