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DESCRIPTION

The FW821 input-output module provides one 24VDC output and one feedback input monitor. The input line is monitored for open line faults and ground faults, and the contact must thus be wired with an end-ofline resistor. The output line is monitored for open lines, short-circuit faults, ground faults, and external 24VDC power source loss. It is a UL/ULC listed device according to UL864 and ULC-S527 for Fire Protective Signaling Systems for indoor use. When the output is activated the device red LED will indicate the event condition by blinking longer. When the feedback is activated the device red LED will indicate the event condition by blinking twice. A return to the normal condition will cause the event to disappear and the device LED indicator will return to blinking every 4 seconds. The FW821 is an intelligent addressable module and takes one address on the Signaling Line Circuit (SLC) or Data Communication Link (DCL) of the fire alarm control panel.

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