HEINRICH Explosion-proof/Fire Proof PA, EVAC, paging and music horn speaker.is approved by EN54 Special design for industrial application like oil field, gas field, coal mine and nuclear power station, industrial applications Suitable for explosion proof, indoor & outdoor and waterproof extremely hostile working environment. Working in explosive gas mixture dangerous atmosphere: 0 zone, 1 zone & 2 zone Working in explosive gas mixture of IIA, IIB & IIC Temperature grade support from T1 to T6 Built -in 100v/70v line transformer. IP66 waterproof and Fire Proof Power output 60W @100V. Steel enclosure and stainless steel bracket in red as per BS6259 part 8 Compliant with explosion-proof EXDII CT6. Approved with fire-proof EN54-24 standards.