ITEM NAME:DC 12V 24V 36V 48V 20A PWM Motor Speed Controller Regulator Waterproof Shell Product Description Description: DC 10-60V 12V 24V 36V 48V Max 20A PWM Motor Speed Controller 5%-100% High Power Speed Regulator Potentiometer with Switch Waterproof Specifications: Model: CCM96SK Potentiometer: resistance B100K; opening 8mm Input voltage: DC 10-60V Control power: 12V*10A=120W, 24V*10A=240W Rated current: 10A Maximum current: 20A Speed range: 5%-100% PWM frequency: 25kHz Size: 88mm*59mm*35mm/3.46*2.32*1.38" Weight: 116g Precautions and instructions for use: 1. The input of this controller is DC, not directly connect it to AC (such as: household 220V AC), otherwise it will burn out. 2. The positive and negative poles of the DC power supply cannot be reversed, otherwise the controller will be damaged. 3. The motor can be connected reversely. When the running direction is inconsistent with the expectation. The direction can be changed by adjusting line sequence. 4. Adjust the potentiometer knob to change the output duty cycle, thus changing the motor speed. Notes: 1. There may be slight size deviations due to manual measurement, different measuring methods and tools. 2. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor. Included: 1 X PWM DC Motor Speed Controller.Maximum current: 20A. PWM frequency: 25kHz. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor. Speed range: 5%-100%. The motor can be connected reversely.