... Luminous Efficiency80-100LM/WWorking Environmentworking temperature-40oC~55oCworking humidity 10%~90%IP RatingIP65;Working Life>50,000 hoursLight Body ... nuts, including the bracket, are made from aluminum 6063. 10. A special ventilating gland is used to ensure the air pressure ... ; 8. Yard, Square Lighting; 9.Road,Highway Lighting; 10.Station,Dock,Deck,Ship,Boat Lighting; 11.Aquarium Lighting etc ...