The Federal Signal 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 DOT, construction, utility and fire trucks. The SLR beacon is multi-voltage (12-24 VDC) and comes equipped with permanent/1-pipe mount base. Additionally, the beacon has (3) built-in rotating speeds of 75/90/120 RPM. Designed specifically to meet the demands of many work environments, the SLR beacon is driven by a gearless motor which is ideal for large vehicle applications.