Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1991-12-20
1993-07-06
Ng, Jin F.
Communications: electrical
Condition responsive indicating system
Specific condition
340506, 340518, 340524, G08B 1300
Patent
active
052258068
ABSTRACT:
A security system in which sensors are included in one or more groups which are stored in the system. Groups of sensors are selectably actuable by a user entering mode information into the system so that only the selected group(s) will provide indication of an alarm condition when a sensor indicates an alarm event has occurred.
REFERENCES:
patent: 4538138 (1985-08-01), Harvey et al.
Gregory Ronald B.
Stanley-Arslanok Annette M.
Walther Mark R.
Wung Chih-Shien S.
Honeywell Inc.
Leonard Robert B.
Mullen Jr. Thomas J.
Ng Jin F.
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