ES453092A1 - Installation of anti-theft alarm by microwave system. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Installation of an anti-theft alarm system, microwave, essentially characterized by the fact that it consists of a block from which radio waves are emitted, the room where the unit is located the impedance for it, so that, if something, for example, a movement produced by the presence of an intruder in the room changes this impedance, the unit sends an alarm signal to an alarm receiver, the installation comprising another two blocks indicating that up to ten motion detectors can be used to, each of which is necessary a separate alarm receiver, whose motion detectors are employable up to a distance of 90 meters outside the rest of the alarm system, to protect more than one place, the alarm receiver being able to turn on a light that indicates the moment in which an alarm state has been detected, whose receiver sends a signal to a timing circuit that provides the system requires the necessary time delays and, if more than one alarm receiver is used, it arranges them in sequence so that it is possible to detect more than one input, whose circuit provides the false signal reduction to the minimum and decides when it has to put an alarm relay into service and allow the owner to enter and exit the protected room without an immediate alarm signal if desired, with the alarm relay being able to connect any type of signaling device desired and to keep the signaling device connected until the alarm system is restored. (Machine-translation by Google Translate, not legally binding)