SIGNALING DEVICE Russian patent published in 2008 - IPC G08B13/08 

FIELD: electric engineering, possible use for controlling position or unsanctioned opening of mobile elements, mounted on other mobile controlled elements, for example, wickets on opening windows or doors, mounted on gate flaps, and also for individual signaling of unsanctioned access and fire alarm signaling.

SUBSTANCE: magneto-sensitive element is installed on immoveable body - jamb of gates or a window. On the mobile element - frame of wicket or door - a magnetic field emitter is mounted. Magnetic conductors, positioned on another moving element - a window or flap of gates, ensure signal output on change of position of any mobile element, and also on increase of temperature above the Curie point.

EFFECT: increased concealment, efficiency and reliability.

3 cl, 2 dwg