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Which type of sensors are equipped on the smoke detectors?Smoke detectors can have two types of sensors: ionization sensors, photoelectric sensors or both usually called dual sensors. The ionization sensor is used to sense flashing fires by detecting the small particles generated by these fast burning fires and triggering the alarm. The technology behind it involves using a radioactive isotope of americium usually, it’s Americium 241 to ionize the air inside a chamber and, if the sensor detects any changes in the air, it triggers the alarm. The disadvantage of using such type of detectors is that they are more prone to false alarms such as when you’re cooking or when there’s a large amount of steam. The photoelectric sensor is more sensitive to larger particles which are specific to slow burning, smouldering fires which could originate from a forgotten cigarette on the couch, but the sensor is not as sensitive to flaming fires. The way this type of detector works is that it uses a light source can be infrared, ultraviolet or visible which points away from the sensor, but, in the event of smoke entering the small chamber, the light particles will be scattered, therefore, some will hit the sensor and trigger the alarm.

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01.14.2007 | 34 Comments

5 Market Estimates and Forecast by End User, 2018–202313 Competitive Landscape13. 1 Key Players Market Share Analysis, 2017 %13. 2 Competitive Benchmarking13. 3 Key Developments Analysis, 2015 201814 Company Profiles14. 1 Nest Labs14. 1.

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01.14.2007 | 16 Comments

The Arlo Q is the Wi Fi security camera to beat. Read our full Arlo Q review. com$37. 99View at Amazon$39. 99View at Amazon?This device comes with two weeks of free cloud storage, as well as a microSD card slot which you can use to enable continuous recording and create time lapse videos. With an add on module, you can link this camera to Wyze's motion sensors and smart bulbs, as well as to third party smart home devices with Alexa and Google Assistant.