C-Tec BF391 Isolated Failsafe Monitor Unit
C-Tec BF391 Isolated Failsafe Monitor UnitAllows IO devices that may not be compatible with the PSUfailure requirements of BS 7273-4 Cat A to comply.Is supplied on a single gang plate with an onboard isolatingEnd of Line Unit EOL and normally energised 24V 3A rated relay.Provides failsafe operation per BS 7273-4 Cat A B Crequirements for all compatible IO units.Provides failsafe operation per BS 7273-4 Cat A B Crequirements for multiple coincidental loop failures sometimes required in aspecification above and beyond the requirements of BS 7273-4 for allcompatible IO units.Key FeaturesAccommodates IO units sited inside or outside the 24V Auxenclosure IO units sited remotely require a BF390 EOL unit to maintain thefailsafe functionProvides complete galvanic isolation between the fire alarmsystem and the door release systemProvides where allowed failsafe manual door releasemonitoring to BS 7273-4 Cat A utilising a single TE cable for multiplemanual operating points such as free swing doors
