ELECTRONIC SEAL Russian patent published in 2014 - IPC G08B21/00 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 technical result is a wider field of use of the device. The electronic seal comprises 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.

EFFECT: by excluding movable parts in the design of the sensitive element, temperature dependency is reduced and performance of the device is improved.

2 cl, 3 dwg