GSA-CC1/MCC1 Single Input Signal Modules and GSA-CC2/ MCC2 Dual Input Signal Modules are part of Kidde's Signature Series system. They are intelligent analog addressable devices used for connecting, upon command from the loop controller, supervised Class B signal or telephone circuits to their respective power inputs. The power inputs may be polarized 24 Vdc to operate audible and visible signal appliances or 25 and 70 VRMS to operate audio evacuation speakers and firefighter’s telephones.

The actual operation of the GSA-CC1/MCC1 and GSA-CC2/ MCC2 is determined by the “personality code” selected by the installer. It is downloaded to the module from the Signature loop controller during system configuration.