9-32 Volt Built from extremely tough extruded aluminium with virtually unbreakable polycarbonate lenses industrial strength multi-angle bracketry and stainless steel fittings. The bars are assembled within an E.S.D protected environment to maximise the life of the L.E.D resulting in life expectancy in excess of 50 000 hours. Fully sealed and submersible the lamps have an IP66 and IP68 rating.