Feature Highlights: 1. PWM Speed Control: Adjusts your DC motor's speed smoothly using Pulse-Width Modulation (PWM) technology. 2. Wide Voltage Range: Works with a broad input power range from DC 1.8V to 15V. 3. Built-in Protection: Features a 2A resettable fuse to help protect the controller and your motor. 4. Convenient Potentiometer: The knob not only controls speed but also functions as a power on/off switch. 5. Compact & Simple: Its small, straightforward design makes it easy to install and use in various projects. Product Details: This DC motor speed controller lets you precisely manage the speed of your DC motor. It's built for durability and safety, operating on a wide 1.8-15V DC range and protected by a resettable fuse. The combined potentiometer and switch makes operation simple—just turn the knob to power on and adjust speed. A bright LED indicates both power status and relative motor speed. Remember to always connect wires according to the diagram with the power off, and swap the motor wires to change direction. Specifications: Control Method: Pulse-Width Modulation (PWM) Input Voltage: DC 1.8V - 15V Maximum Output Power: 30W Maximum Continuous Current: 2A Duty Cycle Adjustment: 0% - 100% Fuse: 2A Resettable Material: Plastic Color: Green Item Dimensions: 1.3" x 1.3" x 0.6" (L x W x H) Net Weight: 0.5 oz Package Includes: 1 x DC Motor Speed Controller (PWM) 1803BK Note: Slight color variations may occur due to lighting and monitor differences. Please allow a slight measurement tolerance of +/- 0.4" - 1.2" (1-3 cm).