System Sensor D4120

Product Overview

 The InnovairFlex D4120 is a 4-wire photoelectric duct smoke detector with a pivoting housing designed for square or rectangular footprints and mounting on round or rectangular ductwork. It operates in airflow speeds from 100 to 4,000 fpm and performs reliably across wide temperature and humidity ranges. The plug-in sensor simplifies installation, testing, and maintenance while improving false alarm immunity.

Key Features

• 4-wire photoelectric detection with integrated low-flow technology
• Pivoting housing for square or rectangular duct mounting
• Plug-in sensor for improved false alarm immunity
• Wide operating temperature and humidity range
• Increased wiring space with ¾" conduit knockout
• Tool-free patented sampling tube installation
• Test/Reset button with improved LED status indication
• Patented interconnect feature for multi-fan shutdown