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E3 <br /> HVAC <br /> Reshaping Duct <br /> Smoke Detection <br /> The System Sensor line of duct smoke detectors offers testing <br /> and inspection features to meet any code. With an inutitive design <br /> and simplifed feature set,the DUCTSD is ideal for many standard <br /> applications. For complex applications the 2:1 sensor-to-power , <br /> capability of the D4120 allows a single power board to monitor <br /> sensors installed in both the supply and return. The easily accessible <br /> Smoke Test Port(on DUCTSD model only)and Test/Reset button <br /> (included on DUCTSD and D4120)simplifies testing for conventional <br /> 4-wire models. Plus, the flexible housing overcomes mounting D4120 <br /> constraints by adjusting to fit a broad range of applications. Duct Smoke Detector in Rectangular Orientation <br /> System Sensor provides increased flexibility with a variety of <br /> accessories, including two remote test stations and several different <br /> means of visible and audible system annunciation.All duct smoke <br /> detectors and accessories are UL listed. Versatile Mounting Options <br />► Square or Rectangular Footprint <br /> Unmatched Flexibility <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 in square or rectangular <br /> configuration with modular construction <br /> • Broader ranges for operating temperature(-4°F to 158°F) <br /> and humidity(0%to 95%non-condensing) <br /> Superior Features <br /> • Integrated low-flow technology <br /> • Integrated Smoke Test Port(DUCTSD only) <br /> • One easy-access"Test/Reset" button <br /> (for conventional 4-wire models) <br /> • Patented interconnectability for multi-fan shutdown <br /> • Built-in short circuit protection from wiring errors <br /> • Field-selectable settings for configuring the detectors <br /> • Sampling tubes install from both front and back of the <br /> detector with patented snap in place feature. <br /> • Easy and quick mounting to round or rectangular ducts <br /> of 1 ft. or 12 ft. (0.3 m to 3.7 m)wide <br /> systemsensor.com/flex 3 <br />