A siren is a loud noise making device. Civil defense sirens are mounted in .....

A siren is a loud noise making device. Civil defense sirens are mounted in fixed locations and used to warn of natural disasters or attacks. Sirens are used on emergency service vehicles such as ambulances, police cars, and fire trucks. There are two general types: pneumatic and electronic.

Many fire sirens (used for calling the volunteer fire fighters) serve double duty as tornado or civil defense sirens, alerting an entire community of impending danger. Most fire sirens are either mounted on the roof of a fire station or on a pole next to the fire station

Fire sirens are often called "fire whistles", "fire alarms", or "fire horns". Although there is no standard signaling of fire sirens, some utilize codes to inform firefighters of the location of the fire. Civil defense sirens pulling double duty as fire sirens often can produce an alternating "hi-lo" signal (similar to a British police car) as the fire signal, or a slow wail (typically 3x) as to not confuse the public with the standard civil defense signals of alert (steady tone) and attack (fast wavering tone).

Siren Sound Effect App will make you love these new sounds. Not only can you have police siren wake you up in the morning as an alarm sound, a car horn notify you as your message tone, but you can have any siren sound and horn sounds you like anywhere and anytime with you. Have fun with your friends listening to air horn, do whatever you like with these sirens and horns! Set a truck horn as your phone ringtone, and make sure your ringtone is unique and distinct!