The MEAN WELL HLG-185H-42B is an AC/DC LED power supply with a constant current/voltage operation. This power supply is capable of delivering up to 184.8W of power at a fixed output of 42V DC and 4,400mA. It also features dimming capabilities, allowing it to be controlled through 1-10V DC, PWM, or resistance inputs. This versatile power supply is suitable for a wide range of LED lighting applications.