The MEAN WELL LPF-90D-42 is an AC/DC LED power supply that provides a constant current and voltage output. With a power rating of 90.3W, this power supply delivers a fixed 42 Vdc at a current of 2,150mA. Additionally, it offers dimming capabilities through 1-10Vdc, PWM, or resistive control methods. This versatile power supply is designed specifically for LED lighting applications, ensuring reliable and efficient performance.