Tag: Sirens

Audible Warning Signals

Your bedside alarm clock may be far from your best friend, but it serves a purpose – to wake you up. This is a very simple example of an audible signal – audible warning signals and audible alarms are on a completely different scale, which is why it’s important to know the different types of audible warning signals available. Types […]

Hand Driven Sirens

A Hand Crank Siren: How does it Work? A hand crank siren is quite similar to an air raid siren, tsunami siren, outdoor warning siren, flood siren, or a civil defense siren. It is usually a mechanical or electronic device that is used to produce a high degree or loud sound that warns residents of that certain area of impending […]