The 200W VHB Series Dust-Free LED UFO High Bay has been engineered to ensure high performance and a long life. It is enclosed in a smooth, streamlined housing that does not allow dust to collect and that maximizes heat dissipation. It provides up to 46,000 lumens of high-quality lighting at an extremely efficient 200 LPW. Best for use in demanding applications such as factories, distribution centers and workshops, this high bay light fixture has a wide voltage range (120-277V standard, optional 120-480V) and a variety of mounting options. With the addition of an optional microwave motion sensor and emergency battery backup, this high bay light fixture also allows for highly intelligent, flexible lighting control. Here, this high bay light fixture is being tested. Each one will undergo this level of testing to ensure our high quality standards are met.