The RMT-RAINBOW RMT1673N RGB LED controller is the function of controlling the LED lighting modes of the fans, switching between various effects, such as the speed of the LED lighting modes, color changing, color intensity adjustment, all via remote control triggering.
It has 3-pin connector (2-pin, space, 1-pin) utilizing 5-volt voltage, these are the main features to identify compatibility with the fans you want to use.