Description
The InnovairFlex D4120 4-wire photoelectric duct smoke detector features a pivoting housing that fits into square and rectangular spaces and mounts in round or rectangular ducts. This unit detects smoke in the most challenging conditions, operating in airflow velocities from 100 to 4000 feet per minute, temperatures from -4ºF to 158ºF, and a humidity range of 0 to 95 percent (non-condensing). A plug-in sensor head offers enhanced 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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