Sensor for merchandise security system

Details Sensor for merchandise security system Sensor for merchandise security system

1990-04-03

1991-12-10

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

200329, 200341, 340568, 340693, G08B 1302

Patent

active

050722131

ABSTRACT:
A merchandise security system sensor encloses a microswitch operated by an overtravel actuator projecting from the sensor housing. The microswitch is adapted to be electrically connected to a monitoring system which generates an alarm signal in response to a change of state of the microswitch. Attachment of the sensor to a protected article operates to depress the microswitch actuator and places the microswitch in a first state. Unauthorized removal of the sensor from the article releases the actuator causing the microswitch to revert to its initial state thereby triggering the alarm.

REFERENCES:
patent: 4253084 (1981-02-01), Toppute
patent: 4620182 (1986-10-01), Keifer

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