This LED tube light fixture was composed of waterproof PC housing and T8 led tubes, IP65 rating and anti-UV transparent diffuser with high light transmittance, Ideal product for replacing exsiting fluorescent tube lights fixtures. Avalible in 2FT 1X9w, 2x9w; 4FT 1x18w ,2x18w 5FT 1x22w ,2x22w. Standard and emergency function option. It can be widely used in tunnel, garage, underground passage, stair well, power distribution room, evacuation passage, parking lots . High-grade PC base and PC diffuser IP65/IK08 Rated. 2FT/4FT/5FT,Single/Double led tube and Stainless steel/PC clips option Single end power in,whole PC+AL heat sink led tube, more safety Bridge wiring in fitting, no need consider power direction of led tube Huge terminal block(hole size 5.0mm), safety and easy wiring Smart inverter for multi-function (option) Emergency function,battery with special housing for quick maintenance (option) Linkable connection function(option) Approved by CE ROHS SAA and C-Tick (RCM). 5 years warranty.