Features Supports forward/reverse rotation control and stop Made with high quality circuit board for longer service life Simple and easy-to-use with elegant appearance Adopts PWM speed control for accuracy and stability Well designed case protects controller board and dissipates heat Features:  Support Forward/Reverse Rotation Control and Stop. The speed controller is made with high quality circuit board which ensures a longer service life. This simple and easy-to-use DC motor speed controller has an elegant appearance and stable performance. Adopt PWM speed control, accurate and stable. Well designed case can protect the controller board from damage as well as dissipate heat. Specification: Supply voltage: DC 12-60V Output current: 40A Dimension: 60*90*99mm / 2.36*3.54*3.9in Mounting size: 52*81mm / 2.05*3.19in   Package list: 1 * DC Motor Speed Controller Package List