The MEAN WELL HLG-40H series is a 40W AC/DC LED driver designed for constant voltage and constant current output. Operating from 90~305VAC, it offers models with different rated voltages ranging between 12V and 54V. With high efficiency (up to 89.5%) and a fanless design, the series can operate within a wide temperature range (-40℃ ~ +80℃). Its metal housing and IP67/IP65 ingress protection make it suitable for both indoor and outdoor applications. The HLG-40H is ideal for LED street lights, high-bay lights, parking space lights, and other LED lighting systems.