System Sensor D4120W

Product Overview

 The InnovairFlex D4120W is a watertight 4-wire photoelectric duct smoke detector designed for harsh indoor and outdoor environments. UL listed with a NEMA 4 rating, it provides protection against rain, dust, splashing water, and hose-directed water. Its pivoting housing supports square or rectangular footprints and mounts to round or rectangular ductwork. Operating in airflow speeds from 100 to 4,000 fpm and across wide temperature and humidity ranges, the D4120W delivers reliable performance in demanding HVAC applications. The plug-in sensor head enhances false alarm immunity while simplifying installation, testing, and maintenance.

Key Features

• NEMA Type 4, UL listed watertight enclosure
• 4-wire photoelectric detection with integrated low-flow technology
• UV-resistant, UL-listed housing and cover
• Pivoting housing for square or rectangular duct mounting
• Plug-in sensor for superior false alarm immunity
• Wide operating temperature and humidity range
• Tool-free patented sampling tube installation (front or back)
• Increased wiring space with ¾-inch conduit knockout
• Easy-access Test/Reset button with improved LED status