With forward and backward two-way toggle switches.The motor speed controller can control the speed and rotation direction of the motor.Speed type: flow controlInput voltage: DC10-55Vfeature:Power (maximum): 3000WContinuous current: 60AMaximum current: 100AControl range: 0-Frequency: 15 kHzcolour: silverMaterial: metalsize: 13x9.8x4cm / 5.12x3.86x1.57inchPackage Contents:3 x Motor speed controllerOnly 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. 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. Sold by-Minnanxin