... : 12v,24v,36v48v,72v,90vNote : It's just the typical technical data for you reference, The specification such as voltage, speed, torque ... ;ZD is the first draft-man of national standardtechnical terms of micro asynchronous speed adjustable motor>in 2008;ZD ... is the first draft-man of standardtechnical terms of small gear motor> in 2010;ZD developed China ...