24 Volt Black TGV Air Horn
Very loud 24v horns that attach to an air supply in a truck to give a TGV style sound (alternating tones) at 130dB!!!
They alternate the tone approximately once a second.
Note: These horns need an airline to work, so need to be fitted to a suitable vehicle.
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These horns are extremely loud and at under £50 you get a lot of horn for your money!