This is very simple and convenient type of motor to vary the rotating speed of single phase induction and reversible motor as well. It is equipped with a speed encoder (tacho-generator) and variable resistor which provides speed controlling with a wide range of 70~1400 rpm (50 Hz) or 90~1700 rpm (60 Hz).  
The output is 6W to 120W.  
The rated voltages are 100V, 115V(UL Standard), 220V, and 240V(CE standard).  
It is recommended to select an appropriate motor type that will fit the load characteristics and user’s conditions.