Description: 100% brand new and high quality Feature: Made of high-quality metal material, durable, firm and has a long service life. It is a kind of device that is used to djust the speed of the DC motor. Easy and simple to install and operate, very useful and practical. Widely used in CNC machine tools, textile printing and dyeing, optical cable equipment, electrical machinery, food processing machinery, experimental equipment, welding and cutting, light industry machinery, logistics transportation equipment, communication equipment, satellite ground receiving system and other industries. DC Motor Speed Controller only, other accessories demo in the picture is not included! Specifications: Item Type: DC Motor Speed Controller Material: plastic+metal Size: 50x32mm/1.9x1.2in Color: Green+Silver+Black Input voltage range: DC 12V-30V Applicable current range: rated 7A, maximum 10A Speed adjustment range: 5% -100%(less than 5%: turn off the potentiometer switch to stop the motor.) Quantity: 1 PC Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 x DC Motor Speed Controller