System Sensor D4120WSystem Sensor D4120W Watertight 4 Wire Photoelectric Duct Smoke Detector System Sensor D4120W Watertight 4 Wire Photoelectric Duct Smoke Detector is designed for reliable smoke detection in HVAC duct systems exposed to harsh indoor and outdoor environments. Its NEMA 4 rated enclosure and low flow sensing technology ensure accurate performance while simplifying installation, testing, and maintenance. NEMA 4 watertight enclosure rated for protection
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System Sensor D4120W Watertight 4-Wire Photoelectric Duct Smoke Detector is designed for reliable smoke detection in HVAC duct systems exposed to harsh indoor and outdoor environments. Its NEMA 4-rated enclosure and low-flow sensing technology ensure accurate performance while simplifying installation, testing, and maintenance.
NEMA 4 watertight enclosure rated for protection against rain, dust, windblown debris, and hose-directed water
4-wire photoelectric duct smoke detector with integrated low-flow technology for HVAC applications
Operates in airflow speeds from 100 to 4,000 FPM and temperatures from –4°F to 158°F
Plug-in sensor head provides strong false alarm immunity and simplified maintenance