smoke detector
US /ˈsmoʊk dɪˌtektər/
UK /ˈsmoʊk dɪˌtektər/

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.