THIS DRIVE WILL NOT OPERATE WITHOUT A PLUG-IN HORSEPOWER RESISTOR. Horsepower resistors are available for purchase from our Amazon store. KB Electronics KBIC-240DS DC motor control 9423 upc 024822094238. Drive manual with full technical specification sheets can be found at: http://www.kbelectronics.com/manuals/kbic_manual.pdf Contact: Industrial Sensors and Controls 615.471.1013 Monday-Friday 8:00am-5:00pm CST.