HLG-40H series is a 40W AC/DC LED driver featuring the dual mode constant voltage and constant current output. HLG-40H operates from 90-305VAC. Thanks to the high efficiency up to 93.5%, with the fanless design, the entire series is able to operate for -40 through +90'C case temperature under free air convection. The design of metal housing and IP67 ingress protection level allows this series to fit both indoor and outdoor applications. 3 in 1 dimming function (1-10Vdc, 10V PWM signal and resistance)