Adds two SLC loops to a two loop FireNET control panel Each SLC loop is capable of 127 sensors/modules, plus 127 analog sounder bases, for a potential total of 254 addresses per loop (127+127 per loop) FN-4127-SLC can be added at the factory or installed in the field Supports Class A and B wiring methods per NFPA72 Styles 4, 6, and 7 (with isolators) Fully supervised & power limited SLC loops Supports Hochiki’s DCP (Digital Communication Protocol) loop protocol Same functionality as built-in SLC loops of FireNET control panel One SLC expander (maximum) may be added per FireNET control panel Each SLC loop is completely independent and autonomous Uses standard wire, no shielded or twisted pair required on SLC loops