Battery-powered home smoke detector
Detector de humo doméstico a pilas
- Date
- 1965 · confidence high
- Place
- Lakewood, Colorado, United States
- Credited to
- Duane Pearsall and Stanley Peterson (SmokeGard); Walter Jaeger's ionisation detector (Switzerland, 1939)
- Field
- Tools
What it is
Cheap ionisation detector with americium-241 and a battery-powered alarm for the home. It halved deaths from house fires.
What it led to
- Mandatory smoke detectors in homes
- Connected smoke and carbon monoxide detectors
- The acceptance of radioactive isotopes in the home
Built on
- Americium1944
- The transistor effect1947
- ionisation chamber
- americium-241
Made possible
- connected detectors (Nest Protect)
- CO detectors