Sunrise I series (100W, 120W, 150W) LED high bay lights from XSY Optoelectronics deliver a flexible solution for a wide range of commercial or industrial applications with superior performance, significant energy savings, long term reliability and installation flexibility. The fixture housing comprises a unique heat sink structure in which a thermally conductive die cast aluminum core with integral fins facilitate efficient dissipation into the ambient through thermal conduction and air convection. The highly effective thermal management reduces thermal impact on the phosphor in the high brightness Nichia LEDs and provide protection for the optical and eletrical components of the fixture. The high efficiency Mean Well HBG provides a constant-current output with a PF-corrected and low THD input for the LED light engines to delivers high lumen output and high efficacy over the extended life of the fixtures. Through excellent overall thermal management as well as current load and voltage load control, the 150W Sunrise I LED high bay delivers system-level performance of 19500 lumens with industry leading efficacies approaching 140 lm/W. The Sunrise I family is equipped with various dimming and control modules such as occupancy sensors and photocells for complete on/off and dimming operation and flexible lighting control.