Promising to save as much as 50% more space than conventional models, the PSW Series ac/dc DIN-rail power supplies accept wide input voltage ranges of 180 to 550 Vac and 254 to 780 Vdc. They achieve an efficiency up to 93% and deliver 100% power continuously at +50ºC using free air convection or operate in +70ºC ambient temperature with suitable derating. Other features include a DC OK relay contact, an active PFC function, 100% full-load burn-in test, comprehensive protection function, and a three-year warranty. ALTECH CORP., Flemington, NJ. (908) 806-9400.