Discovery Marine Ionisation Smoke Detector


The Discovery Marine Ionisation Smoke Detector uses a low activity radioactive foil to detect fires by irradiating the air in the smoke chambers causing a current flow. If smoke enters the chamber, the current flow is reduced leading to an alarm. The detector has a choice of five operating modes which are selected at the fire control panel.


  • Responds well to fast-burning, flaming fires.
  • Designed to operate in a variety of environments.
  • Resilient to dust.
  • Five EN54 approved response modes
  • Remote test feature


  • ESC
  • MED
  • LPCB
  • BV
  • ABS
  • LR
  • KRS
  • DNV.GL


Operating Voltage 17 – 28 V dc
Quiescent Current 300µA
Alarm Current LED On 3.5mA
Dimensions (inc Base) 100mm Dia x 42mm H
Operating Temperature -30°C to +70°C
Relative Humidity 0 to 95% (no condensation or icing)
IP Rating Designed to IP44
Weight (inc Base) 105 grams

Please Note: All data is supplied subject to change without notice. Specifications are typical at 24V, 23°C and 50% RH unless otherwise stated.

Item Numbers

58000-500MAR Discovery Marine Ionisation Smoke Detector