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DC 6V 12V 24V 28V 3A PWM Motor Speed Controller Adjustable Speed DC Motor Driver Forward Reverse Switch Features: 1. Current of 3A: It provides a continuous current of 3A to your DC motor or other DC load. 2. Switch Function: The circuit also includes a 3A fuse, with reverse connection of power supply and control the forward or reverse direction and the stop of DC motor by switch. 3. Operating instruction: Before you attempting to wire the controller, make sure that the power is off. Connect wires refer to the wiring diagram. Turn on the power, and adjust the potentiometer. The LED indicates the power up and the speed of motor. 4. Voltage range: The DC motor speed regulator controls the speed of a DC motor by adjusting Pulse-Width-Modulated. 5. Warning: Do not reverse positive and negative power loads. This will damage the controller. The DC motor governor is connected to a DC power supply, and never directly connected to household 220V AC. Description: The DC motor speed regulator controls the speed of a DC motor by adjusting Pulse-Width-Modulated. Specifications: Material: Metal Size: 5 * 3.2 * 1.5cm Input power range: DC 6-28V Switch cable length: 15cm