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System Sensor Europe, like the majority of manufacturers, is experiencing longer product lead times due to component shortages. As we actively work to improve this situation, your satisfaction remains our main priority. View our current estimated lead times.

Conventional D2E Duct Smoke Detector

The InnovairFlex™ D2E 2-wire photoelectric duct smoke detector features versatile mounting options in square or rectangular configuration with modular construction.

The D2E Conventional Duct Smoke Detector senses airflow speeds ranging from 0.5 -20 meters per second with proven System Sensor precision. It improves false alarm immunity (with plug-in sensor head); detects smoke even in the harshest duct applications; broadens operating temperature (-20ºC to 70ºC) and humidity (0-95% non-condensing) ranges; and simplifies installation, saving 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 1.5 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
  • Transparent cover to view detector head LED
  • Versatile mounting options in square or rectangular configuration with modular construction
  • Easy and quick mounting to round or rectangular ducts of 0.3 m to 3.7 m wide
  • Fitted with base for conventional detectors S300 range
  • Cover tamper feature is incorporated to indicate a trouble condition for removed or improperly installed sensor cover.