Feature 1Higher Accuracy: Wide in speed adjustment range, the DC motor speed controller ensures the stable working performance with high efficiency. 2Standard Design: Supports 220V AC input and 90V DC output, the motor speed regulator enables direct start up when there is DC voltage. 3Reversible Uses: To reverse the CW and CCW rotation direction of your DC motor, you can changing the wiring between Mand and M terminals. 4Wide in Fitting: Suits perfectly for 50W, 100W, 120W, 200W, 300W, 400W and so on, the motor speed control switch has flexible application. 5Easy to Install: Compact in size and light in weight as well, the DC motor speed controller is very convenient to install within minutes.Item Type: DC Motor Speed ControllerInput: 220V ACOutput: 90V DCOverall Dimension: Approx. 100 x 60 x 114mm or 3.94 x 2.36 x 4.49inOpening Size: Approx. 81 x 53mm or 3.19 x 2.09inInstallation Method: Panel Screw Installation .wang-edit-text{ font-family:'Arial' !important } .wang-edit-text table { border-top: 1px solid 000 border-left: 1px solid 000 } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000 border-right: 1px solid 000 padding: 3px 5px } .wang-edit-text table th { text-align: center }Package List1 xDCMotorSpeed Controller Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.