InnovairFlex 4-wire duct detector

The Notifier InnovairFlex D4120 and D4120W multi-voltage (24Vdc, 24Vac, 120Vac) 4-wire photoelectric duct smoke detectors features a pivoting housing that fits various applications: both square and rectangular footprints and mounts to round or rectangular duct work. The multi-voltage 4-wire design allows the D4120 and D4120W duct detectors to be used as a 4-wire device on a conventional fire detection system or as a stand-alone part of a HVAC system.



    • Photoelectric, integrated low-flow technology
    • Air velocity rating from 0.5 m/s to 20.32 m/s
    • Versatile mounting options: square or rectangular configuration
    • Able to be installed as a stand-alone detector
    • Replaceable sensor head
    • Patented sampling tube installs from front or back of the detector with no tools required
    • Cover tamper signal
    • Increased wiring space with 20mm conduit knockout
    • Multiple input voltages

Ordering Information

FG-02-010: D4120W 4-wire weatherproof stand alone duct detector (24VDC, 24VAC, 120VAC)

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