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l � J <br /> DUCTSD Conventional <br /> Duct Smoke Detectors <br /> System Sensor duct smoke detectors combine an impressive <br /> collection of innovations to greatly simplify HVAC system monitoring. <br /> One unit can accommodate multiple installation footprints to <br /> overcome mounting constraints.Tool-free, plug-in sampling tubes <br /> speed and simplify installation. Broad temperature and humidity <br /> •�) ranges accommodate exposure to environmental extremes. Easily <br /> visible status indications, a readily accessible smoke test feature, and <br /> remote test station accessories simplify testing and maintenance.With <br /> unmatched flexibility,these detectors can adjust to fit any application. <br /> Conventional Duct Smoke Detection Devices <br /> D4120 4-wire photoelectric low-flow duct smoke detector,24 VAC/DC,120 VAC <br /> D4240 4-wire photoelectric low-flow duct smoke detector,24 VAC/DC,240 VAC <br /> DUCTSD Standard 4-wire photoelectric duct smoke detector,24 VAC/DC,120 VAC <br /> DUCTSD240 Standard 4-wire photoelectric duct smoke detector,24 VAC/DC,240 VAC <br /> D4S 4-wire photoelectric sensor component only <br /> 1 D4120 D4P120 4-wire photoelectric power board component only,24 VAC/DC,120 VAC <br /> D4120W I Watertight 4-wire photoelectric duct smoke detector <br /> D2 2-wire photoelectric low4low duct smoke detector <br /> • 4-Wire Photoelectric, integrated low-flow technology <br /> • Air velocity rating from 100 ft/min to 4,000 ft/min <br /> (0.5 m/s to 20.32 m/sec) <br /> Versatile mounting options: square or rectangular configuration <br /> • Plug-in sensor and latest sensor technology help prevent <br /> Ofalse alarms <br /> 4-wire Photoelectric Sensor Head • Integrated Smoke Test Port(DUCTSD only) <br /> O • Broad ranges for operating temperature(-4°F to 158°F)and humidity <br /> SP <br /> (0%to 95%non-condensing) <br /> Photoel- ' Low-Profile Detector for • Patented sampling tube installs from front or back of the detector <br /> Special Applications. For replacement purposes with with no tools required <br /> Sensor4-wire System detectors. Increased wiring space with an additional 3/4-inch conduit knockout <br /> Note: _ needs •_ used _ One easy-access Test/Reset button and improved LED status <br /> • . pendant applications. • Patented interconnect feature for multi-fan shutdown <br /> • High-contrast terminal designations <br /> • Built-in short circuit protection from operator wiring errors <br /> • Field-selectable settings for configuring the detector <br /> • Two DPDT Form-C relay contacts <br /> • 24 VAC/DC or 120 VAC <br /> • Backward compatibility with existing System Sensor products, <br /> including remote accessories <br />