MPN : DB140. THE LOUDEST HORN IN THE WORLD HORNIT. Type : BIKE HORN. It emits a piercing 140 decibel sound which is enough to alert drivers of lorries, vans, buses, cars and 'in-a-world-of-their-own' pedestrians.
Package came quickly. The horn is very loud, and mounds easily. The plug connecting the button to the horn looks like an audio jack, on my unit I have to plug it in and twist the cord to find the sweet spot on where the unit will work, otherwise it makes no noise which gives me no confidence that the unit will work when I need it to.