Fire-Lite D365PL Fire Alarm Duct Smoke Detector Housing - This robust sampling tube housing is engineered for the efficient detection of smoke within HVAC duct systems, ensuring rapid response in commercial fire safety configurations. - Operating voltage range: 15 to 32 VDC - Airflow velocity rating: 100 to 4,000 feet per minute - Operating temperature range: -4°F to 158°F - Humidity tolerance: 0% to 95% non-condensing - Housing material construction: High-impact flame-retardant plastic

Compared to legacy duct detection units, the D365PL features a refined, low-profile design that simplifies installation and maintenance in space-constrained mechanical areas. This model integrates seamlessly into modern addressable fire alarm loops, providing more reliable signal processing and reduced susceptibility to false alarms caused by airborne debris or extreme environmental fluctuations.

Advanced Detection and System Integration

The D365PL utilizes intelligent sensor technology to monitor airflow velocity and smoke density with precision, meeting stringent NFPA 90A standards for duct smoke monitoring. Its enhanced optical chamber design maintains sensitivity even in challenging ventilation environments, ensuring that critical life-safety protocols remain active throughout the facility.