Overview Operation Mode : ON-OFF Current Rating : 5 Amps Operating Voltage : 12 Volts (DC) Contact Type : Normally Closed Connector Type : Plug In Brand : Yogcow Switch Type : Rotary Terminal : Through Hole Material : Plastic Item dimensions L x W x H : 1.5 x 1.4 x 14 inches About this item Product function: Advanced PWM dimming control reduces heat & raises efficiency. Offers 0-100% flicker-free linear dimming, just turn the knob to adjust the light/Speed/stemperature to suit you. About DC motor: Voltage 5V - 24V. Supports power: 5V/15W, 12V/30W, 24V/48W. (For LED lights, max 60W (12V/5A)). Easy installation: just plug and play, self-contained 5.5x2.1mm DC male/female connectors. Wide use: Widely used for led lights dimming, adjust motor speed, fans speed regulation, automobile fan heater control, thermostat/defroster, etc. NOTE: This Knob control switch must use constant voltage DC power supply. Please don't use AC power or constant current power.