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capacitance alarm |
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capacitance alarm A device which is electrically connected to a protected metal enclosure (such as a safe, vault, file, or security cabinet) so that the enclosure itself becomes part of a balanced-capacitance circuit. A person approaching the protected cabinet unbalances the electrical circuit and activates a security alarm. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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