Series 65 Ionisation Smoke Detector

Product Overview

The Series 65 Ionisation Smoke Detector uses a low activity radioactive foil to detect fires by irradiating the air in the smoke chambers and causing a current flow. If smoke enters the chamber, the current flow is reduced leading to an alarm.


  • Responds well to fast-burning, flaming fires
  • Designed to operate in a variety of environments
  • Wide operating voltage
  • Flashing LED and magnet operated test switch option



Voltage 9-33 VDC
Quiescent Current 20-45µA at 24 VDC
Alarm Current 52mA at 24 VDC
Size (inc Base) 100mm Dia x 50mm H
Operating Temperature -20°C to +60°C (no icing)
Relative Humidity 0 to 95% (non condensing)
IP Rating IP23D (EN60529)
Weight (inc Base) 153 grams


Item Numbers

55000-217AMP Series 65 Ionisation Smoke Detector