The Mean Well ELG-100-42D2 is an AC/DC LED power supply from the ELG series. It has an output power of 100 watts and a DC output voltage of 42 volts. It features high efficiency, up to 90%, and active power factor correction (PFC). It has a wide input voltage range of 90-305VAC and is certified to UL, TUV, CB, CE and EMC safety standards. It has a built-in two-stage PFC for low harmonic distortion, with 110% peak output load capability. The enclosure is IP42-rated for indoor use and is protected against short circuit, overload, overvoltage, and over temperature. Available accessories include an adjustable output mounting bracket and an externally mounted cooling fan.