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0 <br /> HVAC <br /> Intelligent <br /> Duct Smoke Detectors . II <br /> System Sensor duct smoke detectors combine an impressive <br /> collection of innovations designed to save you time and money and <br /> provide the flexibility you need in the field.An adjustable housing <br /> overcomes mounting constraints. Plug-in, tool-free sampling tubes <br /> .: <br /> speed installation.The DNR model accommodates a wide variety <br /> of intelligent smoke detectors(detector head sold separately).With <br /> these features and many more, System Sensor is reshaping duct <br /> smoke detection. <br /> Intelligent Duct Smoke Detection Devices <br /> DNR Intelligent non-relay photoelectric duct smoke detector. <br /> *Detector head sold separately <br /> DNRECL Eclipse series intelligent duct smoke detector housing <br /> DNRHS High sensitivity duct smoke detector which provides very <br /> early warning fire protection in interior duct applications <br /> DNRW Watertight intelligent non-relay photoelectric low-flow duct smoke detector <br /> *Detector head sold separately <br /> • Photoelectric, integrated low-flow technology <br /> (detector head sold separately) <br /> • Air velocity rating from 100 ft/min to 4,000 ft/min(DNR) <br /> • Air velocity rating from 300 ft/min to 4000ft/min <br /> (1.52m/s to 20.32m/sec)(DNRECL&DNRHS) <br /> • Adjusts to square and rectangular mounting configurations <br /> • Broad ranges for operating temperature(-4°F to 158°F) <br /> and humidity(0%to 95%non-condensing) <br /> • Patented tool-free, plug-in sampling tubes t • <br /> • New cover tamper signal <br /> • Increased wiring space with a new 3/4-inch conduit knockout <br /> • Housing has space for mounting a relay module O <br /> • Easily accessible code wheels on sensor head(sold separately) 2251 BR <br /> Photoelectric Smoke Detector <br /> • Clear cover for convenient visual inspection SPOT <br /> • UL 268A listed _ <br /> • Remote testing capability 'r use with intelligent 'uct smoke detector <br /> detectors, <br /> • Requires com line power only <br /> gral <br /> • NEMA Type 4 UL listed for non-hazardous indoor and outdoor communication provides point location for alarm <br /> communication and selective maintenance. <br /> applications(DNRW only) <br /> • UV-resistant, UL-listed housing and cover material(DNRW only) <br /> • 24 VDC operation(DNRHS) <br /> • Temperature range 32°F to 100°F(0°C to 38°C)(DNRHS) <br /> systemsensor.com/flex <br />