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Audible Notification Appliances

MSS Detector Base Sounders
  • Volume up to 100 dB(A)
  • Electronic tone generator integrated into the signaling device
  • 11 different tone variants can be selected (incl. DIN tone)
  • Great reliability and long service life
  • For surface and flush-mounted cable feed
  • The LSN types maintain LSN loop functions in the event of wire interruption or short-circuit thanks to two integrated isolators


LSN vds
DS 10 Sounders
  • Very robust housing made of 4 mm pressure-molded aluminum
  • Compact and maintenance-free
  • Great reliability and long lifespan
  • Can be used in adverse environmental conditions
  • Reverse polarity protected connections
  • Volume up to 110 dB(A)


FNM-420U Sounders, uninterruptible
  • Uninterruptible alarm signaling – even in the LSN stub
  • Maximum current consumption of less than 4.35mA
  • Volume of up to 101.3dB(A)
  • Immediate synchronization
  • Long life cycle and modern design


LSN vds