The input voltage should be equal to the rated voltage of the motor (within 12-48V). Such as motor rated voltage 12V input 12V motor 36V input 36V. Also, the each additional item means. The the same color and size.
Transit time may be a little delayed because of the. If you have any questions. This item is in the category "Business, Office & Industrial\Industrial Automation & Motion Controls\Drives & Starters\Drives & Motor Controls\Speed Controls". The seller is "2011-fashionstyle" and is located in this country: CN.This item can be shipped worldwide.