Sounder, Atex, 110 dB, 24VDC, for acoustic signaling of hazards in workplaces with risk of explosion of category 3G (zone 2) and 3D (zone 22). Protection category against gas and dust. IP 67 for safe operation in the most extreme environmental conditions. 32 different sounds. Temperature -25 to + 55° C. ATEX certificate and EN 54.3.