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 IP65 ingress protection level allows this series to fit both indoor and outdoor applications. Current and Voltage output adjustable through built-in potentiometer.