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Precious Plastic is an open hardware plastic recycling project and is a type of open source digital commons project. The project was started in 2013 by Dave Hakkens and is now in its fourth iteration. It relies on a series of machines and tools which grind, melt, and inject recycled plastic, allowing for the creation of new products out of ...
Smoke alarms, also known as smoke detectors, generally sound an audible and visual alarm. Smoke alarms are usually housed in a disk-shaped plastic enclosure about 6 inches in diameter and 1 inch thick and are often powered by a disposable battery. Instead, heat detectors are a device that responds to changes in ambient temperature. Heat ...
The resulting etched plastic therefore contains a permanent record of not only the location of the radiation on the plastic but also gives spectroscopic information about the source. Principally used for the detection of alpha -emitting radionuclides (especially radon gas), the radiation-sensitivity properties of CR-39 are also used for proton ...
How they work: Whether your detector uses antennas, microprocessors, or some combination of both, the receivers in your detector tune into active radar signals. The X, K, and Ka bands are the ...
Full body scanner in millimeter wave scanners technique at Cologne Bonn Airport Image from an active millimeter wave body scanner. A full-body scanner is a device that detects objects on or inside a person's body for security screening purposes, without physically removing clothes or making physical contact.
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Updates to the standard are planned to occur biannually. [28]Version 1.0 of the specification was published on 4 October 2022. [29] It introduced support for lighting products (such as mains power plugs, electric lights and switches), door locks, thermostats and heating, ventilation, and air conditioning controllers, blinds and shades, home security sensors (such as door, window and motion ...
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related to: open source plastic detectors for home safe rooms for sale