Supports forward and reverse rotation control with stop function. The speed controller features a high-quality circuit board for extended service life. This simple and easy-to-use DC motor speed controller offers an elegant design and stable performance. Utilizes PWM speed control for accurate and stable operation. Well-designed case provides protection for the controller board and aids in heat dissipation. Specification: Supply voltage: DC 12-60V Output current: 40A Color: Black Material: Plastic Dimensions: 60 x 90 x 99mm / 2.36 x 3.54 x 3.9in Mounting size: 52 x 81mm / 2.05 x 3.19in Package Contents: 1 x DC Motor Speed Controller Note: The package includes only the items listed above; other products are not included. Lighting and display differences may cause slight variations in the color of the item compared to the picture. Measurement error is +/- 1-3cm.