Lifeboats typically do not have a warning siren or horn like larger vessels; instead, they are equipped with sound signaling devices such as whistles or bells to alert nearby vessels or individuals. These devices are designed to be used in emergencies to signal for help or indicate the lifeboat's presence. Additionally, lifeboats may have communication equipment to relay information to other ships or rescue services.
The gold mine has a warning siren.
Lights, and Siren.
a siren
A Siren....but the different tones of a siren are Wail, Yelp, Hi-Lo, Hyper Yelp, and the Air Horn. Loudness of a siren is between 110-130 db
About 3-4 feet long.
Noisemaker - includes vuvuzelas
Lights are a more effective warning than a siren. Lights are silent and a siren can provide warning to suspects when the police would like to catch them.
A horn or a siren can produce a loud sound.
yes
A siren is sounded to warn of an air attack.
Radio
You click the horn button ones