Special exponential loudspeaker for use in potentially dangerous atmospheres, with degree of protection IP67 (standard IEC-529) and 15 W of power on a 100 V line. ATEX EX II 3 G certification. EN 50014 EEx nA II T6 certification. Working temperature between -50 and +50 ºC. Aluminum alloy LM6 color RAL 7031.