The listing, NEW Federal Signal VIPER S2 Police & Fire fighter LED strobe NEW 23 Patterns has ended.
This is professional 23 pattern LED Federal Signal Viper S2 dual head strobe NEW takedown/emergency light. This unit is VERY bright and the one I use for firefighting response. The light has alternating blue/white LEDs and patterns. Check out the following for details from the manufacturer and a video of the unit model in use. Mine is BLUE/WHITE and custom ordered but is the model shown just different in that the red side is white. I have one of these and a Firebeam so I don't need this one and am selling here cheap for my fellow listings.