... ELECTRICAL is a professional manufacurer of power supply products,like:voltage stabilizer,voltage regulator,switching power supply etc., switching power supply T-40: ModelSpecificationT-40AT-40BT ... DC voltageCH1:+10,-5%CH1:+10,-5%CH1:+10,-5%AC input voltage range85~264VAC? 47~63Hz; 120~370VDCAC input voltage ...