Patent ID: 7170403

Claim:
A tamper switch structure for detecting removal of a security sensor from a fixed object surface to which the security sensor is fixed, wherein a tamper switch body comprising a depressible switch actuating member is housed within a housing of the security sensor, and the removal is detected when a state in which the security sensor is fixed to the fixed object surface and the switch actuating member is depressed is changed to a state in which the security sensor is removed from the fixed object surface and the depressed state of the switch actuating member is released; wherein a tamper opening is formed at a position opposite the switch actuating member in the housing of the security sensor, and wherein an elastic switch member is provided that seals the inside of the housing by closing the tamper opening, and that renders the switch actuating member in a depressed state by elastically deforming by receiving a pushing force from the fixed object surface to which the security sensor is fixed, while maintaining the closed state of the tamper opening, in a fixed state of the security sensor.