12V-80V DC 30A Digital Display PWM HHO RC Motor Speed Controller without case

Features: High Power, Digital Display Input supply voltage: 12V-80V DC PWM frequency: 21kHz Duty Cycle adjustable: 0%-100% Rated current: 20A Max current: 30A Potentiometer with switch function Large 0.56 inch 3-digit LED display numbers allow viewing under the most adverse conditions The display range of 3-digit LED display is "000"-"100". (For example, displayed "055", it means that the PWM output duty cycle is 55%.) Incorporate a 30A fuse, and with the protection function of reverse connect power supply Notes: 1.Before you attempting to wire the controller, make sure power is off. 2.Do Not Reverse Positive And Negative Power Loads. This Will Damage The Controller. To Change Motor Direction, Interchange The Positive And Negative Wires of Motor. Package Included: 1x Digital Display PWM Motor Speed Controller