While I would like to run outside in sub-zero temps to take photos of my air horn unit, I think I'll just advise you of how things are going after almost one full year of use.The entire unit has worked flawlessly, with the horn being installed facing front behind the grille of a 2011 Highlander. It's HEAVY. I had removed the grille in the first place to install Feniex quad surface lights and it just made fitment, with a hole being drilled into an aluminum bar at the base of the radiator. Hooked the system to a Swatow Industries 6 Gang Switch Panel, fired it up with a momentary toggle switch and that puppy rocks. Truly makes a distinguished sound that goes beyond simple car horn, and startles people who don't expect the sound. When dispatching to front line scenes, using it as well as the bank of grille, dash, hideaway and visor LEDs move traffic along the way. They're used as "courtesy" lights, of course no one HAS to move but they do.I've driven in the rainy season, extreme heat and wintry weather, used wands for high pressure car washing and not once has the horn faltered. It doesn't do high/low pitch but a steady fire truck kind of blare. We have laws against using the high/low pitch of sirens, and this keeps my POV in compliance.Absolutely glad that this was installed, it works and I hope that SoundAlert/Lamphus produces a "rumbler" speaker that uses dual pitch sounds that penetrate better.
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