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IS-A105N Alarm Sounder

I.S High Output, 105dB(A) Alarm Sounder

The IS-A105N Can be used to interface with the CHQ-ISM (intrinsically safe sounder module) via an addressable loop or a conventional sounder O/P 

The IS-A105N is a igh output, 105db alarm sounder. Approvals include ATEX, IECEx and GOST-R for Zone 0 applications, FM approval for Class I Division 1 and Class I Zone 0 applications.

The IS-A105N is suitable for all instrinsically safe signalling applications including fire, security and process control.



  • Input overload and reverse current protection
  • Auto synchronised sound output
  • Unit can be mounted using external lugs or internal BESA compatible fixing positions
  • Duplicate cable terminations (in & out for daisy chain installs)
  • Available with custom tone configurations and frequencies