Everyone knows what the lock, unlock, and trunk buttons on a key fob do. Yours might also have a panic button, but how can ...

These are incredibly loud devices ... out in a noisy environment. For a car horn, that’s perfect. The result is that [Tom] can press a number of buttons on his dash to play different sounds ...

Motorists can now easily track down their lost petrol and diesel vehicles in a packed car park just by hitting a simple button on their ... a fully functional car horn is not just a safety measure ...

These are incredibly loud devices ... out in a noisy environment. For a car horn, that’s perfect. The result is that [Tom] can press a number of buttons on his dash to play different sounds ...