High quality with forward and reverse two-way rocker switch. The engine speed controller can control the engine's speed and rotation direction Speed Type: Flow Control Input Voltage: DC10-55V Power Consumption: Power (Max): 3000W Continuous Current: 60A Maximum Current: 100A Adjustable Range: 0-100 percent Frequency: 15 kHz Color: Silver Material: Metal Size: 13x9. 8x4cm or 5.12x3.86x1.57 inches Package Contents: 1 x Engine Speed Controller The above package contents only do not include other products. Note: Lighting and different monitors may cause the product in the image to be slightly different in color from the actual product. The allowable measurement error is 1-3 cm. 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.