Features: Upgraded PWM DC10V 12V 24V 30V motor controller delivers precise 10-30V adjustable speed control with forward/reverse switching,for 120W motors in robotics and automation projects. The metal case controller features position safety switches, external 0-10V voltages input compatibility, and a responsive potentiometer knob for smooth duty cycle adjustments. Engineers, DIY enthusiasts, and industrial technicians will appreciate its double control mode (manual knob + external voltages) for prototyping machines. Perfect for workshop power tool, conveyor belt systems, and 3D printer modifications requiring reliabled bidirectional motor control under 30V. Its overloads protecting circuit design maintains stable PWM signal output while preventing voltages reversal damage to connection equipment. Specifications: Item: PWM Controller Reversing Switches Power：120W Comonent:Metal Support：10V 12V 24V 30V Size: about 73x46mm/2.87x1.81in Package Includes: 1Set PWM Controller note: Due to problem of lighting effect there might be tolerances in product, please understand. Please allow 0-2mm error due to manual measurement.