Sensor test method and apparatus

Details Sensor test method and apparatus Sensor test method and apparatus

1995-09-28

1997-11-11

Hofsass, Jeffery

Communications: electrical

Condition responsive indicating system

With particular system function

340506, 340515, 340539, 340531, 34082569, 34082572, G08B 2900

Patent

active

056868855

ABSTRACT:
In a security system having a remote monitoring station, a sensor is tested when the security system is in a normal operating mode. The sensor is tested by actuation of a button on the sensor. Actuation of the button generates a signal indicating that a test has been conducted. Upon the generatation of both an alarm signal generated by the test and a signal indicating that a test has been conducted, the security system determines that the alarm signal was generated by a test of the sensor and not by the detection of alarm conditions by the sensor.

REFERENCES:
patent: 4044351 (1977-08-01), Everson
patent: 4206450 (1980-06-01), Harden et al.
patent: 4412211 (1983-10-01), Lautzenheiser et al.
patent: 4884059 (1989-11-01), Shapiro
patent: 4901056 (1990-02-01), Bellavia et al.
patent: 4908602 (1990-03-01), Reich et al.

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