High Power 12V-80V DC 30A Digital Display PWM HHO RC Motor Speed ControllerProduct DescriptionCCM6DS-D Digital Display DC Motor Speed Regulator controls the speed of a DC motor by adjusting Pulse-Width-Modulated (PWM).Input supply voltage: 12V-80V DCPWM frequency: 21kHz; Duty Cycle adjustable: 0%-100%Suitable current range:current rating: 30A.Potentiometer with switch function.Large 0.56 inch 3-digit LCD 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%.)Item size:module:3.94"*2.96"*1.11";display device:3.12"*1.66"*0.95" Net Weight: 5.8 ouncePotentiometer with switch function.Incorporate a 30A fuse, and with the protection function of reverse connect power supply.Potentiometer cable length 0.79inch.