... changed continuous ly)4,output current:0 to specified value5,high and low current:working plied automatically,timing(0 to99hours99minutes) 6 ... cycle:1-75%(it depend on worked voltage and current);9,overall efficiency:92±5%function & primary material1,this product ... stabilized voltage/current function;3,this product with protected functions of over-voltage , over-currentover-heating ,over-loading ;4, ...