Type: brushless pull Size:12 inches Rated voltage: DC12V Rated current: ≤12A Speed range: 1000-2700 rpm Rated speed: ≥2700±100 rpm Motor power: 140W Noise: ≤70dB(A) Control system: PWM/ Temperature Temperature range: -40~±90℃ Could work with connecting the positive and negative charges 1st wire: red wire is "+",black wire is "-" 2nd wire: two white wires are temperature sensor 3rd wire: yellow wire is PWM, voltage-control wire