Communications: electrical – Condition responsive indicating system – With particular coupling link
Patent
1995-08-11
1996-11-12
Hofsass, Jeffery
Communications: electrical
Condition responsive indicating system
With particular coupling link
340587, 340636, G08B 1700
Patent
active
055744346
ABSTRACT:
An alarm for multistaged heat detection is provided. The alarm provides a multi-point detecting structure by applying a digital operation unit. The alarm has both pre-alarm and normal alarm modes. The digital operation unit coordinates the sound and light output to effect different alarm signals. A power capacity checking circuit is included to indicate a low operational state of the system power. A coercing alarm circuit is also included for stopping all detecting to cause the system to output an alarm signal in an emergency.
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Hofsass Jeffery
Klein David I.
Lee Benjamin C.
Rosenberg Morton J.
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