With forward and reverse switch, potentiometer knob with switch, can use PLC to control forward and reverse.Input voltage: DC10-50VOutput Voltage: Linear under loadOutput limit current: 40A (20A for long-term use, pay attention to keep the module unobstructed for heat dissipation)Limit power: 2000WSpeed regulation type: flow regulationSpeed regulation mode: potentiometer (linear)Speed regulation duty cycle range: 0-100%Control frequency: 25KHZWiring Type: Barrier Terminal BlockKnob cable length: 20CMMotherboard according to installation size: (length x width) 100MM x 76MMPotentiometer according to the installation hole: 7MMMaterial: PCBcolour: green + blackPackage Contents:1 x DC motor speed controllerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.