Features Widely used in industrial DC motor speed regulation, industrial conveyor belt speed regulation, lighting and lighting mediation, computer power supply cooling, DC fan, etc. You can control the speed of a DC motor with this controller, high efficiency, high torque and low heat generation. It is industrial design, stable and reliable, with anti-static circuit, safe to use. The energy power of the power supply can be utilized and the efficiency of the circuit is high. Enable to provide a continuous current of 30A to your DC motor or other DC load. Specification: Condition: 100% Brand New Item Type: Motor Speed Controller Supply voltage: DC12V-24V Output current: 30A Product features: Control brush motor speed (Speed Knob Switch) Product Size (Length * Width * Height): Approx. 70 * 50 * 15mm / 2.8 * 2 * 0.6in Installation Size: Approx. 61 * 41mm / 2.4 * 1.6in (4 * diameter 3mm) Product Weight: 50 g / 1.8 oz(approx.) Product Packaging: Anti-static Packaging Package List: 1 * Motor Speed Controller Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package List