D4120 SYSTEM SENSOR 4 WIRE CONV,DUCT DETECTOR W/SMOKE DETECTOR
D4120 SYSTEM SENSOR 4 WIRE CONV,DUCT DETECTOR W/SMOKE DETECTOR
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D4120 SYSTEM SENSOR 4 WIRE CONV,DUCT DETECTOR W/SMOKE DETECTOR

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The InnovairFlex D4120 4-wire photoelectric duct smoke detector features a pivoting housing that fits both square and rectangular footprints and mounts to round or rectangular ductwork. This unit senses smoke in the most challenging conditions, operating in airflow speeds of 100 to 4,000 feet per minute, temperatures of –4°F to 158°F, and a humidity range of 0 to 95 percent (noncondensing). A plug-in sensor head offers improved false alarm immunity and simple installation, testing, and maintenance. An improved cover design isolates the sensor head from the low-flow feature for simple maintenance.

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