Description
The System Sensor D4120W is a 4-wire photoelectric duct smoke detector designed for reliable smoke detection in HVAC duct systems, even in high-moisture or washdown environments. Featuring a watertight NEMA-rated enclosure, this detector is well-suited for applications where humidity, condensation, or outdoor air handling conditions are present. The photoelectric sensing technology provides early detection of smoke particles within duct airflow, helping prevent the spread of smoke throughout a facility. The D4120W integrates with conventional fire alarm systems and is commonly used in commercial and industrial air handling units, rooftop units, and ventilation systems.
Key Features:
- 4-wire conventional duct smoke detector
- Photoelectric sensing for early smoke detection
- Watertight, NEMA-rated enclosure for high-moisture environments
- Designed for HVAC duct and air handling applications
- Compatible with a wide range of air velocities and duct sizes
- Ideal for outdoor or washdown environments
- Supports integration with building fire alarm systems
- Durable construction for commercial and industrial use
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