Input Module FW851

Fire Alarm Input Module

FireWatcher 811

The input module FW811 monitors a single dry contact and is a UL/ULC listed device according to UL864 and ULCS527 for fire protective signalling systems for indoor use.
It is an intelligent addressable module and takes one address on the Signaling Line Circuit (SLC) of the fire alarm control panel.


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        The field circuit is monitored for open line faults and ground faults and the contact must be wired with an end-of-line resistor. The type of input contact is configurable for NO/NC operation.

        Alarm Events: An module input will produce an ALARM event when an alarm generating contact device is activated. The device LED will indicate the alarm condition by red steady on.

        Supervisory/Trouble/Monitor Events: The FW811 input module can be configured to be a supervisory, trouble or monitor signal which will produce an event when a signal input appears on its associated contact. The device LED will indicate the event condition by red steady on.

        • Nominal Voltage: 24VDC
        • Voltage Range: 15 to 28VDC
        • Standby Current: 0.17mA
        • Alarm Current: 0.79mA
        • Max. Line Impedance: 25 Ω
        • Max. Impedance for: Grounding 6.6 KΩ
        • Compatible EOLR: FW421 (10KΩ)
        • Operating Temperature of the fire alarm input Module: 32°F to 120°F (0°C to 49°C)
        • Operating Humidity: 0% to 93% RH
        • Mounting: FW800 base
        • Dimension 120 mm (L) x 120 mm (W) x 45 mm (H)
        • The Module Weight (with backbox): 8.7 oz (247 g)
        • Wiring Gauge: 12 to 18 AWG
        Ul approved alarm products
        UlC approved alarm products
        FM approved alarm products
        FCC approved alarm products

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