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Acoustic signallers suitable for hazardous area Zone 1 & Zone 21

Ex d / Ex tb – IP66

These acoustic signallers are specific for alarm signalling in potentially explosive atmospheres in ambients featuring significant background noise. They have 32 selectable sounds. They work in continuous duty.

The external screws are in Stainless Steel AISI 304.


  • Type of protection: Ex d /  Ex tb

  • Degree of protection: IP66

  • Certified for:

    • Gas group IIC or IIB+H2
    • Dust group IIIC
  • Max range ambient temperature: -50°C ÷ +60°C

  • Material used: Aluminium light alloy

  • Max rated voltage: 230 Vac / 110 Vdc

  • Sound intensity: 112 dB

  • Weight: 3700 g

Acoustic signaller ETH20 for hazardous area
Data sheet

Coming soon

ATEX Certificate

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