It is a Motor Speed Controller/Speed Regulator/PWM Stepless Speed Control Module, Operating voltage: DC 12V~60V, Output current: 10A Max, Control power: 0~480W, It has small size, high efficiency, long term stable and reliable quality,easy installation and use . Especially Suitable for regulation of low-voltage electric wire fever, such as: cutting styrofoam, EPE, raincoat production, galvano cautery painting,and other equipment etc.