Ladies and gentlemen, fellow enthusiast,
today we are talking about the setup for acoustic signals; that's the name of the horn in the Traffic regulations. So if you give an audible signal it should really work, firstly, and secondly, sound reasonable; therefore we offer high note and low note horns. The high notes are easy to locate, but do not carry so far; the low notes penetrate (fog horn), but it is difficult to determine which direction it's coming from. So: high note plus low note emanates best signal effect.
Here are a few options
Your Limora Team