Finally, simplicity in a warning flasher! TecNiq's AutoSync eliminates the need for a costly central vehicle flash controller or any interconnections between lamps. Our patent-pending technology enables TecNiq emergency flashers to hold synchronized flash patterns for over 8 hours of continuous use. Standard mounting patterns and a variety of pre-programmed flash patterns make the K series emergency flashers perfect for new construction or retrofit. For alternating flash patterns, just connect one light's wig-wag wire to the 12v source and that lamp will flash out of phase with the others. By pairing our ultra-efficient lens technology with world leading LEDs, the K series provides high output emergency light over an industry-leading range of angles. AutoSync equipped lights also feature a built in powerful microprocessor controller, low electrical noise, submersible electronics, excellent price point, lifetime warranty, and assembled in the USA.