... , Bulb, Reflector, Timer, In-line Fan, Heavy Duty Hangers Hydroponic Equipment, Hydroponic Lighting: Ballast, Bulb, Reflector, Timer, In-line Fan, Heavy ... : -25 ~ +50 Centigrade 9) Enclosure temperature rising: 30 Centigrade 10) Safety protection: IP21 Features: 1) Outstanding energy-saving effect A) Low ...