Apollo 55000-390APO | AlarmSense Optical Smoke Detector


The Apollo 55000-390APO AlarmSense Optical Smoke Detector Apollo works using the light scatter principle. The detector changes to alarm state at a pre-set threshold of smoke penetration into the sensing chamber.

Alarmsense by Apollo is a range of detectors, sounders and accessories designed to be connected to a single cable, saving time and money whilst simplifying the whole installation process.



  • Apollo 55000-390
  • Responds well to slow-burning, smouldering fires
  • Well suited for bedrooms and escape routes
  • 360° visibility of LEDs
  • Reduces false alarms
  • Quick and simple installation
  • Base supplied separately (please see related products below)


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