What is another word for police whistle?
Pronunciation: [pəlˈiːs wˈɪsə͡l] (IPA) 
A police whistle is a vital tool for law enforcement and security personnel, typically used as a signal for backup or to control crowds. There are several synonyms for the word police whistle, including whistle, referee whistle, security whistle, patrol whistle, guard whistle, and law enforcement whistle. All these synonyms refer to the same tool but used in different professions and situations. Referee whistle is used in sports for officiating, whereas security whistle is used by security personnel for signaling danger. Patrol whistle is used by army personnel to signal commands to troops, whereas law enforcement whistle is used by police officers for police operations.
