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Intelligent DNRE Duct Smoke Detector

The InnovairFlex™ DNRE intelligent non-relay photoelectric duct smoke detector features versatile mounting options in square or rectangular configuration with modular construction.

The DNRE Intelligent Duct smoke detector senses airflow speeds ranging from 0.5 -20meters per second with proven System Sensor precision. It improves false alarm immunity (with plug-in sensor head); detect smoke even in the harshest duct applications; broadens operating temperature (-20ºC to 70ºC) and humidity (0-95 percent non-condensing) ranges; simplifies installation, saving your time and money.

The improved cover design, with the integrated the low-flow feature, isolates the sensor head from the low-flow technology for simple maintenance.



  • Integrated low-flow technology
  • Air velocity: from 0.5 m/s to 20.3 m/sec
  • Superb false alarm immunity with the latest sensor technology
  • Broader ranges for operating temperature (-20ºC to 70ºC) and humidity (0% to 95% non-condensing)
  • Built-in short circuit protection from wiring errors
  • Clear cover for convenient visual inspection
  • Versatile mounting options in square or rectangular configuration
  • Patented sampling tube installs from front or back of the detector with no tools required
  • Easy and quick mounting to round or rectangular ducts of 0.3 m to 3.7 m wide
  • Fitted with base for Intelligent detectors S200 range
  • Housing to accommodate relay module
  • Cover tamper signal