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Some brands of wireless smoke detectors include First Alert, Kiddle, OneLink, and V-Plex. Of these brands some also include the option of voice controlling. While other include a hardwired option for providing constant power.
The first smoke detectors are based on optical principles - photoelectric detectors.
Alpha particles from americium ionized the air. An air with smoke has a different ionization, ionization currents which are also different are measured, compared and the detector (which was before calibrated) is ready ! The americium smoke detectors (with ionization) are not the first smoke detectors.
Masterguard Smoke Detectors are made in Coppell, TX.
Smoke detectors are devices that detect smoke. They are used as warning devices in houses to warn people of fire.
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There are several types of smoke detectors that can be used in the home. Interlinked smoke detectors can interlink smoke and heat detectors for better convenience. Also, wireless units can be configured specifically to your needs. More safety and smoke detector information can be found on: http://www.safelincs.co.uk/Smoke-Alarms/
Americium become to be largely used in smoke detectors after 1970.
Smoke detectors detect smoke by not detecting it. They sense not the smoke, but the oxygen levels surrounding it. when the oxygen levels drop, or when smoke replaces the oxygen, the alarm goes off.
Smoke detectors were invented in the year 1967. :P
You can go to the following website to see reviews about the most efficients smoke alrarms http://www.consumersearch.com/smoke-detectors/best-smoke-detectors