Vixen HornsVXS-9050C Red Loud 110dB/12V Motor Driven Alarm Siren Horn Small/Compact

Can i use with 5vdc for a quieter application? i want to use it for a prototype board and not deafen everyone who watches :)

What do I hook it up too?

How well would this work to scare off trespassers?

I want to attach this to my beach cruiser bike, what would be the best power source other than a huge 12v battery? Anyway I can use smaller batteries?