The LSWCD120S280ST is a digital switching regulator from Autec Power Systems. It is a single output, 120W, 28V switch mode power supply with adjustable output voltage. It has a wide input voltage range from 90 to 264VAC. It features a high power factor, low idle power consumption and high efficiency performance. The unit is housed in a compact DIN rail package and is equipped with safety features, including overvoltage, overload, and short-circuit protection, as well as a remote on/off control.