ETH series acoustic signals are recommanded when it's necessary the use of a signalling bell and/or alarm, in areas with potentially explosive atmosphere.
The sounds to select are five (BI-TONE - YELP - WAIL - INTERMITTENT - FIXED NOTE), or single (BI-TONE).
- Body and cover in low copper content aluminium alloy;
- Stainless steel screws;
- RAL 7000 epoxy coating.