Source 4WRD LED is a replacement for a standard Source Four luminaire burner assembly that will convert the HPL source to an LED. The simple and quick upgrade is non-destructive and takes only minutes. In most cases it can even be done without breaking focus on your luminaire. Source 4WRD LED is theatrically dimmable via DMX or line dimmable to allow flexibility to your installation. And, because it is an LED source, your Source Four luminaires will run cool and efficiently without lamp replacements.