The dc motor speed controller is convenient and practical, with excellent texture, and can serve you for a long time without being easily . The craftsmanship can serve you well without breaking easily, a very practical dc motor speed controller. Features -Color:Green -Material:PCB, aluminum alloy, iron, electronic components -Size:5.00X3.20X1.50cm/1.97X1.26X0.59in Input/output voltage: DC 2.4-12V Output current: <2A Service life: 100000 times - Pulse width modulation with variable voltage input range has the advantage of making full use of the energy of the power supply, and the circuit is efficient. - Rotate the potentiometer clockwise, the motor will ; Rotate the potentiometer counter-clockwise, the motor will slow down. - Note: Do not reverse positive and negative . This will damage the controller! - Manufactured with professional technology to ensure the product can work for a long time. - With fine workmanship, simple in design and very practical in use, easily win your favors. Package list: 1 x Dc Motor Speed Controller