Smoke Detector Collection

Fitting a battery in to a smoke alarm

Man installing smoke detector, close-up

Black and white illustration of a hand holding a lit candle underneath a smoke detector

Black and white illustration of hands placing shower cap over smoke alarm, to prevent false alarm

Light dependent resistor. This component is a sensor usually made from cadmium sulphide (CdS). Light levels affect the electrical resistance of CdS

Smoke alarm. Domestic smoke alarm mounted on the ceiling of a hallway. This smoke alarm is powered by batteries

Smoke detector radiation source. Close-up of the internal componenets of a smoke detector, showing a chamber containing a sample of the radioactive isotope Americium 241

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Protecting your home from fire hazards is as simple as changing a battery in your smoke detector. In this close-up image, see the man's deft hands installing a new one. But remember, regular testing is key. (Illustration: Hand holding a lit candle under a smoke detector as a test). False alarms can be prevented with a shower cap (Illustration: Hands placing a shower cap over a smoke alarm). Advanced smoke detectors even use light-dependent resistors to detect both smoke and fire. (Illustration: Smoke detector with light-dependent resistor). And rest assured, your smoke detector doesn't emit radiation, unlike some other safety devices. (Illustration: Smoke alarm symbol with a crossed-out radiation source). Stay safe and stay informed.