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The first smoke detectors are based on optical principles - photoelectric detectors.
CO2 detectors are used for detecting levels of carbon monoxide in the air. Many people use CO2 detectors in their homes to prevent carbon monoxide poisoning.
Laser detectors detect laser beams used by law enforcement to measure speed, while radar detectors detect radio waves used by police radar guns. Laser detectors are more precise but have a shorter range compared to radar detectors. It's recommended to have both types of detectors for comprehensive coverage.
A: Inrusion detectors
The element used in smoke detectors and named after the US is Americium (Am). It is a radioactive element commonly found in household smoke detectors to detect smoke particles in the air.
14-3 Is the standard wire use for residental smoke detectors.
Smoke detectors are devices that detect smoke. They are used as warning devices in houses to warn people of fire.
You can purchase used HPLC detectors and other equipment from the usedhplc website or from the ebay bidding website. Alternatively you can buy HPLC detectors from the equipnet website.
Infrared detectors are commonly used to detect wavelengths in the infrared range of the electromagnetic spectrum. They can be made using various technologies, such as thermopiles, pyroelectric detectors, and semiconductor-based detectors like InSb or HgCdTe detectors. These detectors convert infrared radiation into an electrical signal that can be analyzed or used for various applications.
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Nickel detectors
Fire detectors are now used on earth to alarm people when somethig is smoky or is burning. This is also used to prevent fires by alarmig people about fires.