The SAME SKY CFM-4028BG-180-369 is a compact and powerful DC fan designed for a variety of cooling applications. Measuring 40x40x28mm, this fan operates on 12VDC and utilizes a ball bearing system for enhanced durability and longevity. The integrated Pulse Width Modulation (PWM) control enables precise fan speed adjustments, optimizing cooling performance and minimizing noise. A tachometer output provides accurate feedback on the fan's rotational speed, allowing for effective system monitoring. Ideal for electronics cooling, server applications, and other demanding environments. Supreme Components International is an authorized distributor of SAME SKY components, ensuring you receive genuine and reliable products.