With start/stop button and compatible with external switches to meet various control requirements. Motor soft start function allows current to increase gradually at startup, eliminating inrush current and helping protect the motor and extend its service life. Adjustable duty cycle with upper and lower limits and configurable operating frequency for optimized performance based on motor characteristics. Equipped with a digital encoder knob for precise and consistent motor speed adjustment compared to standard potentiometer controls. Housed in a standard meter case for easy installation. Chemical-Free: None Motor Type: DC Motor Voltage Options: 12V, 24V Current Rating: 5A DC Motor Controller Color: Dark Gray Material: ABS Package Contents: 1 x Motor Controller Note: Other items not included. Note: Lighting effects and display differences may cause slight color variations between the image and the actual item. Measurement error allowed within +/- 1-3 cm.