Features: This 1803BK DC Motor Speed Controller allows controlling the direction of a DC the motor using a Pulse-Width-Modulated (PWM) DC voltage with a Duty Cycle fully the product adjust from 0%-100%. With a self-recovery fuse 2A and a Power-On LED light. Enable to provide a continuous current of 2A to your DC motor or other DC load. Specifications: Input supply voltage:1.8V-15VDC The max output power:30W The max continuous output current :2A Duty Cycle adjustable: 0%-100% Size: approx. 32*32*15mm/1.25*1.25*0.59'' Net weight: approx. 14g Note: DC motor speed regulator DC power supply, do not be directly connected to household 220V AC. Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding.