Cellular Communications: It is most importantly employed as a secure form of signal transfer to the Monitoring Station. The Cell communicators (aka radios) are installed within the building structure, often times close to the alarm system control panel, making them near not possible to disable prior to breaking in. Such radios are activated and registered in a way identical to a standard cell phone and communicate signals through cellular communication towers, as do cell phones. Radios can be employed as “primary communicators” or as a “back up” to the land line.