Attention: No lock switch, let the button go, the motor won't turn Specifications: Input voltage: DC6-30V Output voltage: Load Linear Input Current: require large than the motor operating current Output Current: determine load size Continuous current: 8A within Max Current: 10A Maximum power: 200W (power, etc. current and voltage) Quiescent Current: 0.01ma Speed type: modulated current Speed Support: 0-5V Speed mode: ON \ OFF linear potentiometer 270 degrees Speed range: 0-100% Operating frequency: 15KHZ Knob hole: 7mm Size: 7.4x4.7x2.5cm/2.91x1.85x0.98inch Quantity: 1 Pc Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Contents: 1 x DC Motor Speed Controller