Wolo® "Call to the Post" Musical Air Horn
4 air trumpets play the most easily recognized notes of the "Call to the Post" song at the touch of a button... getting attention instantly with 118 decibels of power! Electronic compressor wires directory to your vehicle's battery to replace your existing horn, no air tank or valve needed.
Set includes a heavy duty 12 volt maintenance free compressor and impact-resistant durable plastic trumpets, tubing, relay, mounting hardware and instructions. Easy to install. Powered through your vehicle's 12 volt cigarette lighter.