Sound level: 600DB. ???? Stronger air pressure can be made of upgraded air compressor and larger coil, which can prompt the horn emit a louder and clearer sound.
600DB Super Loud Train Air Horn Kit 12V Truck Car Dual Trumpet + Air Compressor
12V 600DB Super Loud Train Air Horn Kit Truck Car Dual Trumpet + Air Compressor
600DB Super Loud Train Air Horn Kit 12V Truck Car Dual Trumpet w/ Air Compressor
600DB Super Loud Train Air Horn Kit DC 12V Truck Car Dual Trumpet Air Compressor
