with Positive and Negative Rotation Switches,Potentiometer Knob with Switch,Can UsePLCControl Forward and Reverse.Positive and Negative Rotation Switches Can Be Replaced with Inching Switch. Display Tube and Module Are Connected by Cable,Cable May Loose and Fall off during Express Delivery,The Buyer Needs to Insert It Firmly by Himself,Don't Order If You Mind.With0-100 Percentage Digital Scale PositioningTechnical Indicators: Input Voltage:DC10-55V(Equal to the Rated Voltage of the Motor) Output Voltage:Linear under Load. The Maximum Current:60A. Continuous Current:40A (Pay Attention to Heat Dissipation Or Reduce Current Usage for a Long Time)Speed Control Type:Flow Regulation . Speed Control Mode:Potentiometer(Linear) Support Motor: DC Brush MotorForward and Reverse: Support . Speed Range:0--100% . Control Frequency:15KHZColor: silvermaterial: metalWiring Type:TerminalKnob Specification:100K(With Switch)Wiring Type:Fence TerminalProduct Net Weight: 249GramsMotherboard Size:100MM x 76MM x 28MMShell Size:110 x 78 x 38MMAttention:Digital Display as Motor Full Speed Percentage0-100Actual Speed of Non-MotorInput Voltage Must Be Divided into Positive and NegativeInput Voltage Is DC10-55VThe Internal Voltage Must Be Equal to the Rated Voltage of the Motor.Make Sure the Positive and Negative Connections Are Correct before Power on,Do Not Touch the Wiring Cooling Fin,The Circuit Board May Be Burnt When Encountered..Note That This Is Not a Power Module,The Motor Must Be Connected to Speed Control.,There Is No Change in the Output of the Multimeter without Connecting the Motor.,Can't Connect to AC.Brush Motor.All Goods Sold in Our Store Are Electronic Parts Categories,Need Some Professional Knowledge to Use,Improper Use May Easily Cause Equipment Or Personal Injury.,Buyers Must Pay Attention.Our Store Does Not Bear Any Consequences.Package Contents:1 x 40A Motor governorOnly the above package content, other products are not included.Note: Light 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.