Intelligent Watertight Non-relay Photoelectric Duct Smoke Detector

Product Overview

DNRW intelligent watertight non-relay Photoelectric Duct Smoke Detector features a pivoting housing that fits both square and rectangular footprints capable of mounting to a round or rectangular duct. This unit senses smoke in the most challenging conditions, operating in airflow speeds of 0.5 m/s to 20.32 m/sec, temperatures of –20 °C to 70 °C and a humidity range of 0 to 95 percent (non condensing).


  • Utilises a standard plug-in conventional photoelectric smoke detector – supplied separately
  • Integrated Low-Flow technology
  • Air Velocity rating from 0.5 m/s to 20 m/s
  • Versatile mounting options: square or rectangular configuration
  • Broad ranges for operating temperature (-20 °C to 70 °C) and humidity (0 % to 95 % non-condensing)
  • Patented sampling tube installs from front or rear of the detector with no tools required
  • Cover Tamper signal
  • Large wiring space with three 20 mm conduit knockouts
  • Remote test capability
  • Improved LED status
  • Powered from the analogue loop

Click here to download the white paper: Duct Application Smoke Detectors

Ordering Information

Product Code



AA Watertight Duct Housing no Relay no Detector