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Auxiliary zone alarm signaling relays (AS) are often needed to provide an interface to other systems for annunciation and/or to
pilot electrical shutdown. Also, (AS) relays may be used for cross zoning initiating circuits or various panel control functions.
Reference the Installation Wiring Diagram (IWD) for specific function of installed relays.
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These relays are typically de-energized and sourced with 24V full wave rectified (FWR) power to the positive side of the coil. The
coil negative is connected to a zone output terminal. Each zone output terminal is internally connected to an open collector transis-
tor switch to system common. When the appropriate zone goes into an alarm state this “negative going” output activates the relay
and its contacts change state.
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?>D13D(1D9>7 10 Amps @ 24VDC
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?9<(1D9>7 0.015 Amps @ 24VDC
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