They are devices that operate with magnetic pulse and vibration technology and are used by security personnel to detect any foreign metal, and these devices are always used in the security of airports, embassies and all important buildings because of their importance in securing these places from any harmful foreign metals that may threaten the security of these institutions.
These systems are the most common and famous among the systems, as they are used in public institutions, roads, private property insurance, and military institutions with the aim of securing and following up the place to be protected first and foremost.
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Clean extinguishing media (gases) include halons, halon alternatives, and inert gases, and these gases are used in complete immersion fire extinguishing systems for sealed areas to avoid exposing the occupants of these areas to severe health damage that may lead to death
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