Shopping Basket

0 Items

Subtotal £0.00

Apollo Discovery Marine Heat Detector

£36.86 (inc VAT: £44.23)

Low Stock

SKU: 58000-400MAR Category: Brand:


Discovery Marine analogue addressable fire detectors are suitable for larger vessels. The high specification range has been developed to meet the requirements of sophisticated systems. Discovery gives you total reassurance in installations where it is necessary to adapt detection to different operating environments and where protection against unwanted alarms is paramount.

The Discovery Marine Heat Detector uses a single thermistor to sense the air temperature at the detector position. The thermistor is connected in a resistor network, which produces a voltage output dependent on temperature. The design of the resistor network, together with the processing algorithm in the microcontroller, gives an approximately linear characteristic from 10°C to 80°C. This lineariser signal is further processed, depending on the response mode selected, and converted to an analogue output.


  • Approved for use in the marine environment
  • Five response modes for environmental adaptation
  • Day/night switching for increased flexibility
  • Drift compensation for false alarm reduction
  • User programmability for data
  • XPERT card addressing for increased security
  • Ideal in environments that are dirty or smoky
  • Unaffected by wind or atmospheric pressure
  • Remote test feature


  • Operating voltage: 17-28V DC
  • Quiescent: 400µA
  • Power-up surge current: 1mA
  • Maximum power-up time: 10 seconds
  • Alarm indicator: Two colourless LEDs, illuminated red in alarm. Optional remote LED
  • Alarm current, LED illuminated: 3.5 mA
  • Remote output characteristics: Connects to the positive line through 4.5 kΩ (5 mA maximum)
  • Clean-air analogue value: 23 +4/-0
  • Alarm level analogue value: 55
  • Operating temperature: -40°C to +70°C
  • Humidity: 0% to 95% RH (no condensation or icing)
  • IP Rating: IP44
  • Standards & approvals: EN 54-5, EN 54-7, CPR, LPCB, MED, LR,BV, DNV-GL, VNIIPO, CCS and KRS
  • Dimensions: 100 mm, diameter x 50 mm height (58 mm with XPERT 7 mounting base)
  • Weight: 105 g
  • Materials: Housing – White flame-retardant polycarbonate Terminals – Nickel-plated stainless steel


Additional information

Weight 1 kg

Detection Type

Hazardous Applications

Marine Applications


System Type