MULTI-FUNCTIONAL HOUSINGWell-designed housing protects the driver board from damage and dissipates heat. REVERSIBLE SWITCHThis DC motor speed controller supports control and l forward/reverse rotation stop. ADJUSTABLEThis DC motor speed controller supports precise and stable PWM speed control. This simple and easy-to-use DC motor speed controller has an elegant appearance and stable performance. PREMIUM PRODUCTThe speed controller consists of a high quality circuit board which guarantees a longer service life. Product Description Specification: Power 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