Patent ID: 7948378
Filing Date: 2011-05-24
Classification: G08B

Abstract:
1. A tamperproof non-contact switch device for restricting access to a control unit, comprising: an access panel having an exterior and an interior surface; at least two access switches and a tamper detection switch disposed on the interior surface of the access panel, the access and tamper detection switches being magnetically actuatable and in electrical communication with the control unit; at least two access keys removably disposed on the exterior surface of the access panel, each access key capable of magnetically actuating only one access switch; the exterior surface of the access panel further includes a lockable cover restricting access to the access keys; wherein the tamper detection switch is equidistant from each of the access switches, said tamper detection switch for detecting a foreign magnetic source in the vicinity of either access switch; the access keys are magnetized bolts; and wherein each access key is in axial alignment with its corresponding access switch.