smoke detector

US /ˈsmoʊk dɪˌtektər/
UK /ˈsmoʊk dɪˌtektər/
"smoke detector" picture
1.

detector de humo

a device that detects smoke, typically as an indicator of fire

:
The smoke detector went off, alerting us to the fire.
El detector de humo se disparó, alertándonos del incendio.
Every home should have at least one working smoke detector.
Cada hogar debería tener al menos un detector de humo funcionando.