SNM Obsolete Product
Supervised Notification Module
The SNM provides Style Y or Z supervision for ground faults, opens, and shorts on notification appliance circuits connected to fire alarm control panels. The SNM is suitable for use with 2 or 4-wire circuits, and provides one Trouble and one Ground Fault LED and a set of Normally Closed trouble contacts to indicate off normal conditions. The SNM also provides a Bell Silence switch for use during testing or service.
You can connect a maximum 5 Amp, 12 or 24 VDC UL listed auxiliary power supply to the module to support alarm power requirements beyond the panel's alarm output capacity.