... distance can be up to 5-20meters, ideal for government lighting engineer, commercial establishments, airports, subways, elevate, overpasses, building ... : 460-475Slot MaterialHigh Strength Die-casting alloy,toughtened glass on the top coverWork VoltageDC 24VWattage36WSize580(L)**65(W ... 300C~+550COptimum working temperature: -00C~+300C3, The lamp has glass parts, pls note gently handling, do not stress.4, ...