working light 1.faster radiationg for aluminium, 2.high temperature resistance. 3. ... -40 +105°C can work normally under serious environmentwaterproofIP68applicationBoat, off road, bus, truck, dune buggy, breakdown truck (loader truck,digger, crane ... , mine car, bulldozer, cutting car, road roller, forklift),train,special vehicle(command car, fire truck, recovery ...