Magnetic switch for activating or deactivating lock or alarm, has magnet moved closer to one of magnetic proximity sensors, when key is applied on plate, such that sensors change state of relay to perform permutation of batteries

摘要

The switch has a removable key (1) and a switch placed in a fixed case (2) having a plate (3). A magnet (6) is placed in the key, and two batteries (5a, 5b) situated inside the case are linked to two magnetic proximity sensors (4a, 4b). The magnet is moved closer to one of the sensors, when the key is applied on the plate, such that the sensors change the state of a relay (7) to perform the permutation of the batteries.