HB75 LED highbay light, designed for high temperature working environment, using the design of power supply and light body separation, so that the heat of the light body and the heat of the power supply do not affect each other, to ensure the product life to the greatest extent, the light source adopts EMC5050, this chips maximum temperature can withstand 130 degrees Celsius, output 160LM per watt of light efficiency. The optics use tempered glass, which is able to withstand high temperatures of 280 degrees Celsius.The lighting fixture can be used normally during the high temperature test at 75 degrees Celsius