INTRUSION INDICATOR Russian patent published in 2015 - IPC G08B13/06 G09F3/03 

FIELD: physics, signalling.

SUBSTANCE: invention relates to electronic engineering, particularly to alarm systems, and can be used in developing methods and equipment for controlling access to a facility. The indicator has a housing which consists of two electrodes separated by a dielectric insert, which form a capacitive sensitive element which is electrically connected to a power supply, an indicative communication interface coil and an electronic unit for measuring capacitance of the sensitive elements, processing and storing information, said components being located inside the housing and connected to each other, and a safety cap which is installed on the housing of the device for protecting the sensitive element from interference.

EFFECT: low temperature dependence of the capacitive sensitive element and improved performance of the device.

5 cl, 3 dwg