This broad range of HVAC duct smoke detectors from Honeywell System Sensor combine an impressive collection of innovations to greatly simplify HVAC system monitoring. One unit can accommodate multiple installation footprints to overcome mounting constraints. Plug-in sampling tubes speed up and simplify installation without tools. Broad temperature and humidity ranges accommodate exposure to environmental extremes. Easily visible status indications, readily accessible test feature, and multiple compatible accessories simplify testing and maintenance. With unmatched flexibility and reliable performance, these sensors can adjust to fit any application.
Easy Installation, Dependable HVAC Performance Each device complies with global and national safety standards for HVAC fire and smoke safety.
D4120
InnovairFlex™ 4-wire Duct Smoke Detector, 120 VAC
The 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 even in the most challenging conditions, operating in air flow speeds from 100 to 4,000 feet per minute, temperatures of–4°F to 158°F, and a humidity range of 0 to 95% (non-condensing). A plug-in sensor head offers improved false alarm immunity and simple installation, testing and maintenance. The improved cover design isolates the sensor head from the low-flow feature for simple maintenance.
Photoelectric, integrated low-flow technology
Plug-in sensor offers superb false alarm immunity and the latest sensor technology
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
High-contrast terminal designations
Built-in short circuit protection from operator wiring errors
Field selectable settings for configuring the detector
This 1-ft wide sampling tube can be installed from the front or rear of the duct smoke detector. It is compatible with Honeywell System Sensor conventional duct smoke detectors, intelligent duct smoke detectors and watertight duct smoke detectors.
This 1-2 ft wide sampling tube can be installed from the front or rear of the duct smoke detector. It is compatible with Honeywell System Sensor conventional duct smoke detectors, intelligent duct smoke detectors and watertight duct smoke detectors.
This 2-4 ft wide sampling tube can be installed from the front or rear of the duct smoke detector. It is compatible with Honeywell System Sensor conventional duct smoke detectors, intelligent duct smoke detectors and watertight duct smoke detectors.
This 4-8 ft wide sampling tube can be installed from the front or rear of the duct smoke detector. It is compatible with Honeywell System Sensor conventional duct smoke detectors, intelligent duct smoke detectors and watertight duct smoke detectors.
This 8-12 ft wide sampling tube can be installed from the front or rear of the duct smoke detector. It is compatible with Honeywell System Sensor conventional duct smoke detectors, intelligent duct smoke detectors and watertight duct smoke detectors.
