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 TAMANHO: 50x32mm/1.9x1.2in COR: verde+prata+preto 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) Package Includes: 1 X DC Motor Speed Controller. We are an international based seller that will ship your order from abroad, please at least a minimum 14 working days for delivery right now due to the ongoing delays in shipments globally.