Martinshorn, signal horn on an emergency vehicle, compressed air

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Ambulance siren hi-res stock photography and images - Alamy

MARTIN HORN 2298 GM-Max B Martin(Made in Germany)

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Emergency signal hi-res stock photography and images - Alamy

Emergency Air Horn

Yosoo Electronic Martin Horn for Car Music Trumpet Chrome Plated Double Trumpet with Air Compressor for Car Steamship 12V Horn Car Horn Universal : : Automotive

Safety Sport Admiral Air Horn 8oz

Ambulance siren hi-res stock photography and images - Alamy

Signal horn hi-res stock photography and images - Alamy

Industrial Signaling Horn, Industrial Air Horns Air, Steam Whistles

Saillong 1.4oz Marine Boat Air Horn, Loud Air Horns for Safety, Mini Small Blow Fog Bear Horn, Meet Coast Guard, Emergency Use for Marine Boating Sporting Events Outdoor Alarm (2, Blue)

Ambulance emergency hi-res stock photography and images - Page 3 - Alamy

Air horn use hi-res stock photography and images - Alamy

Fiamm International Pneumatic Siren - The A warehouse full of air horns, melody horns, bells, callhorns and other stuff that makes noise