3pcs DC6V-28V 3A PWM DC Motor Speed Controller Switch Adjustable Regulator Pulse Width

nullFeature:High efficiency, high torque, low heat generating.With reverse polarity protection, high current protection.Convenience and easily use.Specification:Material: PCB and electronic componentsInput voltage: DC6V - 28VSustained current: 3APWM euty cycle: 5% - 100%PWM frequency: 21KHzModule dimension: 50 x 29 x 16 mm / 1.97 x 1.14 x 0.63 inch (LHW) (approx)Cable length: Approx 200 mm / 7.88 inchPackage included: 3 x PWM motor speed controller switch