Trying to get the attention of a large group of people all at once can be quite strenuous. You can yell yourself hoarse, but at the end of the day, you’re going to be the one regretting that decision. In these situations, using a horn or siren of some sort is the best option.
The Vestil SIREN Hand Crank Siren will make sure to overpower a crowd, as it emits a 110 dB signal that can carry up to a fourth of a mile. Whether you need this for school, sports, or rowdy family get-togethers, it will be sure to save you a lot of hassle. It does cost $120, but won’t need any batteries, or upkeep. This siren is made of plastic, and comes with a handle and carrying case.