Custom Dynamics Black Magic 4 remote system includes a receiver box, 2 keychain remote control units (fobs) and built in 5 amp fuse. A variety of features including breathe and strobe patterns can be accessed. The brightness and speed of any Custom Dynamics single color motorcycle LED accent lights can also be controlled. Remote Functions: Lights can be turned to solid On/Off. Brightness of lights can be adjusted to different preset brightness levels (100%, 75%, 50% & 25%). Three preset Strobe and Flash patterns. Breathe feature gradually dims then increases brightness of lights repeatedly with adjustable speeds. Custom combinations of brightness, strobing & breathe patterns. Recommended for use with Custom Dynamics single color motorcycle LED accent lights (sold separately).