Features This simple and user-friendly DC motor speed controller has an elegant appearance and stable performance. Adopt the PWM speed control, accurate and stable. Support forward/reverse rotation control and stop. A well-designed housing can protect the control board from damage and dissipate heat. The speed controller is made with a high quality circuit board that ensures a longer service life. Functions: Adopt PWM speed control, accurate and stable. Supports forward/reverse rotation control and stop. The speed controller is made with high quality board, which ensures a longer service life. This simple and user-friendly DC motor speed controller has an elegant appearance and stable performance. A well-designed housing can protect the control board from damage and dissipate heat. Specification: Supply voltage: DC 12-60V. Output current: 40 A. Dimensions: 60 x 90 x 99 mm/2.36 x 3.54 x 3.9 inches. Mounting size: 52 x 81 mm/2.05 x 3.19 inches. Package list: 1 x speed controller for DC motors. Package List