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The alarm points on carbon monoxide detectors are not a simple alarm level (as in smoke detectors) but are a concentration-time function. At lower concentrations, e.g. 100 parts per million (PPM), the detector does not sound an alarm for many tens of minutes. At 400 PPM, the alarm sounds within a few minutes.
You can reset your iPhone to its factory settings and erase all the information stored on the device. Just make sure to back up your data first.
The camera on the iPhone 5 are protected by a sapphire lens cover, as are all subsequent models. [56] In 2014, Apple consumed "one-fourth of the world’s supply of sapphire to cover the iPhone’s camera lens and fingerprint reader." [57] The quality of the sapphire on the lens cover has since been disputed. [58]
The post How to Factory Reset Your iPhone to Delete Everything on It appeared first on Reader's Digest. Before selling or recycling your old one, take these steps to protect your personal data.
CO 2 concentration meter using a nondispersive infrared sensor. NDIR sensors are spectroscopic sensors to detect CO 2 in a gaseous environment by its characteristic absorption. . The key components are an infrared source, a light tube, an interference (wavelength) filter, and an infrared detec
"Good Morning America" reports Wong later returned to the slopes with a metal detector and found his iPhone - Chris Wong says he lost his iPhone while skiing in Vermont, so he searched the slopes ...
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