Smoke detector InnovairFlex series D4120

The D4120, 4-wire photoelectric duct smoke detector features a pivoting housing that fits, and mounts to, both square and rectangular footprints.The D4120 senses smoke in the most challenging conditions, operating in airflow speeds from 100 to 4,000 feet per minute, temperatures of –4°F to 158°F, and a humidity range of 0 to 95 percent (non-condensing) Photoelectric, integrated low-flow technology. Air velocity rating from 100 ft/min to 4,000 ft/min (0.5 m/s to 20.32 m/sec). Versatile mounting options: square or rectangular configuration. Plug-in sensor offers superb false alarm immunity and the latest sensor technology. Broad ranges for operating temperature (–4°F to 158°F) and humidity (0% to 95% non-condensing). Patented sampling tube installs from front or back of the detector with no tools required. Increased wiring space with a newly added ¾-inch conduit knockout. One easy-access Test/Reset button and improved LED status. Patented interconnect feature for multi-fan shutdown. New high contrast terminal designations. Built-in short circuit protection from operator wiring errors. Field selectable settings for configuring the detector. Two DPDT Form-C relay contacts, 24 VAC/DC or 120VAC.