The SP601512M-W is a fan speed controller from Bi-Sonic. It is an industry-standard, robustly-constructed on/off switch with variable speed control of up to 6 fans of any standard size. It features anti-vibration mounting feet, full 2-year warranty, includes up to 3 settings, requires 200-240vAC, and has convenient LED indicators for fan or supply voltages. With a low starting amperage of 0.50A, this product is ideal for quiet PC, server, or industrial fan applications.