Originally Posted by MikeyMK

I have a car horn on my e-bike. Any e-bike can use one with a step-down voltage module of the relevant voltage.

The problem with it is that pedestrians don't seem to think it's for them, more assume it's a motorist moaning at another one, as i ride cycleways/MUP only. So i also have a classic two-ring bell (not the modern single ping type), and usually get a better response from the right people - seemingly because they know instantly that it's a bicycle..