Features: 
This Brand New 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