• European Union (ATEX)
  • IECEx
  • Russia (TR CU, GOST, EAC)
  • North America (CSA, FM, UL)


  • Gas - IIC
  • US Gas - (Class I)


  • Gas Area - Zone 0
  • US Gas Area - Zone 0
  • US Gas Area - Div 1


  • Gas Temp. - T4 (135C)
  • US Gas Temp. - T4 (135C)
  • Lower Ambient Temp - Lower than -20C
  • Higher Ambient Temp - Greater than +40C


  • Gas Concept - Ex ia / ib / ic
  • US Gas Concept - AEx / Ex ia / ib (IS)


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E2S Warning Signals IS-A105N Alarm Sounder

Warning Systems » Audio Sounders / Horns

The IS-A105N is a high output, 105dB(A) alarm sounder. The IS-A105N is suitable for all intrinsically safe signalling applications including fire, security and process control.

Benefits to the IS-A105N Alarm Sounder include:

  • 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 installations).
  • Available with custom tone configurations and frequencies.

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