The Mean Well SD-50A-24 is a 50 watt single output AC-DC LED power supply. It has a Universal AC Input, which allows a variety of AC input sources, including both 110VAC and 220VAC, without the need for any configuration. The power supply has a constant voltage output of 24V, and is designed for use with LED Lights, LED strips and LED signs operating at 24V DC. It features built in over-voltage, over-load, and short-circuit protections, as well as a high ripple, low noise design.