LED explosion-proof sign light, safety exit light A national high-tech enterprise specializing in R&D, production and sales of industrial lighting Power: 5W Temperature class: T1 to T4 Protection class: IP65 Ambient temperature: -40℃ to +40℃/55℃ The standard emergency time of lamps is 90min Suitable for Zone 1, Zone 2, Class IIA, IIB, II C and Group T1 ~ T6 explosive gas environments or flammable dust places.