English version

smoke alarm in Technology topic

From Longman Dictionary of Contemporary Englishsmoke alarmˈsmoke aˌlarm (also smoke detector) noun [countable]  TFIREa piece of electronic equipment which warns you when there is smoke or fire in a building The smoke alarm went off.
Examples from the Corpus
smoke alarmIf possible read the manufacturer's information and instructions before you buy a smoke alarm.He didn't have a smoke alarm.Smoking a cigarette will not normally set off a smoke alarm.There are two basic types of smoke alarm.The couple say that their smoke alarm, provided by the council, wasn't working.