Federal Signal’s SLR beacon combines traditional rotating technology and LEDs in one unique package. Utilizing Federal Signal’s patented Solaris LED reflector technology this beacon packs an unmatched warning signal that is suitable for a variety of large vehicle applications such as DOT, construction, utility operations and fire trucks. This beacon has (3) rotating speeds built-in to every unit so users have the flexibility to choose from 75/90/120 RPM. Each SLR beacon also has capability to operate on either 12 or 24 VDC work trucks.