Ventilation Control Products Sweden AB

Room Smoke Detector with Fire Alarm Siren and Alarm Relay Output, FWD 305

The Room Smoke Detector FWD 305 is an optical (photoelectric) smoke detector equipped with a microprocessor, offering dual alarm signals for fire incidents. It provides both a fire alarm signal from the initiating detector and a warning alarm signal for interconnected detectors in the system.

  • General Information

    • Activation Signal
      Upon powering up, the detector emits a Morse signal (Long, Short, Short, Short) indicating proper functionality.
    • Testing
      Pressing the test button activates the fire warning signal. Releasing the button generates a signal (Short, Short, Short) to confirm functionality.
    • Standard Type Programming (Basic Features)
      • Fire Alarm Siren: Emits a periodic signal when smoke is detected.
      • Alarm Relay Output: Activates immediately upon smoke detection (SPDT, 1A at 24 Vdc).
      • Delay: The relay output has an 8-second delay before activation.
      • Interconnection: Allows activation of additional detectors via an extra wire when one detector senses smoke.

  • Features

    • Fire Alarm Siren
      Periodic sound alert upon smoke detection.
    • Alarm Relay Output
      SPDT relay for integration with external systems.
    • Interconnection Capability
      Other detectors in the system can be triggered when one detects smoke.
    • Test Button
      Allows easy verification of the detector’s functionality.
    • Optical Smoke Chamber
      Enhanced sensitivity to fires in the smouldering stage.
    • Microprocessor Control
      Ensures precise and reliable performance.
    • 8-Second Relay Delay
      Prevents premature activation, ensuring accurate smoke detection.

  • Optical vs. Ionization Smoke Detectors

      • Optical (Photoelectric) Detectors
        • Better for detecting fires in the smouldering stage.
        • Highly effective for early fire detection in environments with visible smoke.
      • Ionization Detectors
        • More sensitive to the flaming stage of fires.
        • Best suited for rapid flame-producing fires.

  • Applications

    • Ideal for residential, commercial, and industrial spaces requiring reliable fire detection with early warning capabilities and interconnectivity.

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Room Smoke Detector with Fire Alarm Siren and Alarm Relay Output, FWD 305-series.pdf

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  • Ventilation Control Products Sweden AB
  • Brodalsvägen 7 Hus z, 433 38 Partille Sweden
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