• European Union (ATEX)
  • IECEx
  • Russia (TR CU, GOST, EAC)
  • North America (CSA, FM, UL)
  • Australia / New Zealand (ANZEx)


  • Mining - M1 / Ma
  • 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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  • Address:

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E2S Warning Signals IS-mA1 IS-minialarm

Warning Systems » Audio Sounders / Horns

The IS-mA1 is suitable for all intrinsically safe signalling applications including fire, security and process control. The IS-mA1M version is also available for Group I mining environments. The IS-mA1 is a compact, 100dB(A) alarm sounder. Approvals include ATEX, IECEx and GOST-R for Zone 0 applications and FM approval for Class I Division 1 and Class I Zone 0 applications.

Key Features:

  •     Input overload and reverse current protection
  •     End of line resistor certified
  •     Auto synchronised sound output
  •     Available with custom tone configurations

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