Strobe Power Supplies with 4 Pop-in Hide-a-way strobe tubes and four 15 foot Strobe cables.When adding a power supply to any vehicle design options of the power supply should be priority, with power supplies you get the best options and premier quality - these are in our opinion the Rolls Royce of strobe powr supplies.Whelen has added ScanLock to their power supplies. A revolutionary design feature that allows you to cycle through 10 flash patterns and lock in the one you want. The flash patterns available are: CometFlash, DoubleFlash, Rapid Rate, Triple Flash, Micro-Burst II, Micro-Burst III, Modu-Flash, Action Flash, Long Burst, Action Scan.These systems are probably the best on market and feature many user friendly options.With 2x4 switching, 6 outlets, 10 flash patterns.Country:United Kingdom