The D1xC3 is an audio-visual explosion proof alarm bar with up to 4 Xenon strobe or LED beacons with a high output alarm horn warning signal. Approved to IECEx, ATEX, UL and cUL for Zone 1, 21 and Class I Zone 1 and 21 plus versions suitable for Class I Division 1. The robust marine grade, corrosion proof aluminium enclosures are rated type 4/4X, IP66/67.