The Aerofan Fan Speed Dimmer (FRC-2) is a simple device designed for precise speed control of a group of Aerofan Electronically Commutated (EC) fans Featuring an intuitive adjustment knob, it allows users to adjust fan speeds accurately from 0% to 100%. Multiple Aerofans can be grouped and controlled together using a single FRC-2 module. Utilizing sophisticated digital communication and EC fan technology, the FRC-2 ensures precise and seamless control of the connected fans, promoting optimal performance and precise airflow management.