• North America (CSA, FM, UL)
  • Canada


  • US Gas - (Class I)
  • US Dust - (Class II)
  • US Fibres - (Class III)


  • US Gas Area - Zone 1
  • US Gas Area - Div 1
  • US Dust Area - Zone 20
  • US Dust Area - Div 1
  • US Fibres Area - Div 1


  • US Gas Temp. - T6 (85C) *
  • US Dust Temp. - T135C *
  • Lower Ambient Temp - Lower than -20C
  • Higher Ambient Temp - Greater than +40C


  • US Gas Concept - AEx / Ex d (XP)
  • US Dust Concept - AEx / Ex ta / tb / tc


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E2S Warning Signals D1xS1R Radial Alarm Horn Sounder

Warning Systems » Audio Sounders / Horns

The D1xS1R is a 115dB(A) high output alarm horn sounder with an omni-directional, radial horn. Suitable for all Class I & II Division 1, Zone 1 & 20 explosion proof applications, the D1xL1F is Type 4/4X, IP66 with marine grade, corrosion proof aluminium enclosure.

The D1xS1R Radial Alarm Horn Sounder has low current consumption and high SPL, with the 24V dc version approved for public mode fire alarm use and the 110-240V ac version for general signalling use. It features 64 alarm sounds, and the alarm tone frequencies for the first 2 stages are independently selectable. Each of the available 4 stage/channels can be remotely triggered e.g. via an external relay.

Key Features:

  •     High output, up to 115dB(A)
  •     Public mode fire alarm use
  •     4 remotely selectable alarm stages/channels
  •     Positive or negative line stage/channel switching
  •     Choice of 64 alarm tone frequencies
  •     Automatic synchronisation on multi-sounder system
  •     Continuously rated
  •     Compact form factor
  •     Robust corrosion proof aluminium enclosure
  •     Stainless steel fixings
  •     Triple cable entries
  •     Duplicate cable terminations (in & out for daisy-chain installations)
  •     Available with custom tone configurations and frequencies

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