Features:Thisis a simple and easy-to-use DC brushed motor speed controller of elegant appearance and stable performance.Speed controller is made with high quality circuit board which ensures a longer service life.Designed with screw terminals for quick and convenient wire connection.This motor speed controller has switch function, and can also accomplish CW/CCW rotation control.High performance DC motor speed governorhas large power, small heating, high efficiency and high moment of force, whileno loud noise.Specification:Model: CCM2NJWorking Voltage: 12-40V DC (output voltage is about 0-100% of input voltage)Control Power: 12V=36W, 24V=72W....40V=120WRated Current: 3AMaximum Current: 5ASpeed Control Range: 0-100%PWM Frequency: 15KHZPotentiometer: Resistance B100K, opening 8mmSize(L x W x H): 73 x 39 x 31mm / 2.9 x1.5 x 1.2inWeight: 74g / 2.6oz (approx.)Package list:1 x Speed ControllerNote: 1, This speed controller is used for DC burshed motor.2, It is not suitable for DC brushless motor; can not be used as a voltage regulator or voltage stabilizer.3, Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering..