Acoustic Signallers
(In stock)
| Product Name | Acoustic Signallers |
| Model Number | ETH12, ETH20, ETS30, ETS60 (various sound levels and applications) |
| Brand | Coelbo |
| Category | Explosion-Proof Acoustic Alarm / Bell / Siren |
| Country of Origin | Italy |
| Material | Aluminium light alloy housing; external screws in stainless steel AISI 304 |
| Applications | Emits alarm tones in hazardous areas (Zone 1 gas, Zone 21 dust); used in factories, chemical plants, mining, silos to alert personnel in noisy or hazardous environments. |
Coelbo’s acoustic signallers—ETH12, ETH20, ETS30, and ETS60 series—are explosion-proof auditory alert devices certified to Ex d / Ex tb standards and rated IP55–66, making them ideal for use in Zone 1 gas and Zone 21 dust environments
ETH12: Compact model with 32 selectable tones (102–106 dB); IP65, 230 Vac/110 Vdc, -20 °C to +55 °C
ETH20: Enhanced version offering louder output (112 dB); IP66, 230 Vac/110 Vdc, -50 °C to +60 °C .
ETS30: Small siren-style intermittent or continuous duty device; IP66, 102 dB, -50 °C to +50 °C
ETS60: Higher power siren suitable for outdoor or industrial use; IP66, 109 dB intermittent, -20 °C to +40 °C
komachine.com
All units feature aluminium alloy bodies, stainless steel hardware, and rugged construction. Tones are selectable and devices run continuously or in burst mode. With IP66/67 protection, these signallers deliver reliable audio warnings in harsh, explosive environments such as oil & gas, mining, and chemical processing plants.
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