Device for signalling (reporting) theft

摘要

The signalling points are series-connected and the disturbance is reported to the central station as a current interruption. In this way, lines which have been cut likewise trigger the signal. All important circuit parts are located in a safe. The disturbance switches on a clock, and only when said clock has reached the contact point (leaving the driver enough time for getting out and in) are the various warnings and shut-downs activated.