HK 12V 150db Air Horn for Truck, Super Loud Dual Trumpet Air Horn Kit with Compressor for Any 12V Vehicles Trucks Lorrys Trains Boats Cars Vans Kit (Black)

Convenient mount, compact size. But I don't think that the sound power corresponds to 150dB. It's hard to tell without the device. I know what 120db sounds like. It's a slightly louder horn.

Sound so good 10/10 buy this

Now if you're lookin' for an air horn that’s loud enough to clear the whole road ahead, this HK 12V 150db Air Horn is just what the doctor ordered. I slapped this baby on my truck, and let me tell ya, it’s LOUD! At 150 decibels, this thing ain’t playin’ around – it'll get attention from a mile away. The dual trumpet design is sharp and gives it a nice deep sound that cuts right through the noise. Plus, the black finish looks slick, which ain't hurtin' anything! Installation was a breeze, especially with that included compressor. This kit’s ready to go on just about any 12V vehicle you got – trucks, boats, RVs, you name it. Once I got it set up, I gave it a test honk, and man, it scared the birds right outta the trees! This air horn ain’t just for show; it’s perfect for any situation where you need to let folks know you’re comin’ through. If you need a horn that'll make folks take a step back, this one’s as good as gold. Highly recommend it – just make sure you’re ready for the sound!

Fairly loud for a 12 volt unit. Used on my golf cart

Easy installation and this is set up with the relay attached. Hook up the positive to the original horn wire and negative to the chassis and you done! Very easy installation! Great value for the money and sounds like it should, loud! Functions perfect! Horn is built good and unscrews so you can install easier. I installed in my ranger in the stock location! Perfect!