Select-A-Pattern Headlight Flasher

For vehicles with systems that require electrical isolation ensure that you select the Yes for Isolation model. Please contact us if you have any questions.

Did you know SoundOff Signal invented the very first high conspicuous - extreme use "wig wag" headlight flasher over 25 years ago? When you purchase a genuine SoundOff Signal flasher you can be assured that you are buying from the leading flasher manufacturer. Our expertise, unmatched technical support, and No Hassle Warranties are why we remain the trusted leader in flasher systems. It's a fact, we manufacture & sell more flasher systems than all of our competition combined. It begs the question, "why would you buy a flasher from anyone else?" Our headlight flasher systems are designed to offer you the best protection available at the most critical moments on the job. We take public safety, the safety of your officers and keeping your agency's fleet operational very seriously.

The Isolation model refers to whether or not your vehicle will require the flasher to run on a separate circuit. We generally recommend the Isolated version for all vehicles with Canbus systems built-in. Important Note: You can run the Isolated Model on any vehicle with or without CanBus however, the non Isolated Model should only be used on vehicles without CanBus Systems. 


  • Select-a-Pattern Technology with 7 user selectable flash patterns to choose from: PowerPulse, RoadRunner, Q-Switch, ETM, Cycle Flash, Single or Double Flash
  • Great flasher choice
  • Works with Positive Side Switched Headlight Systems
  • Also recommended for Positive Side Switched Motorcycles
  • Long lasting & reliable Solid State design is circuit board driven with no moving internal parts
  • Small & compact - flasher is just 4.70" long
  • Easy to install into tight spaces
  • Made with a durable & non-corrosive ABS plastic housing
  • 5 Year No hassle Warranty



ETHFSS-SP Data Sheet


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