Fireboy-Xintex Fixed Heat Detector w/Base [OMHD-04-DB-R]

Sale price$190.00
Only 5 units left


Fixed Heat Detector with Base

The Fireboy-Xintex Heat Detector uses a single thermistor to sense the air temperature around the detector. This heat detector was designed to detect how fast the temperature is increasing.


  • 163°F Fixed Heat Detector
  • Housing: White flame-retardant polycarbonate
  • Terminals: Nickel-plated stainless steel
  • Ideal in environments that are dirty or smoky
  • Unaffected by wind or atmospheric pressure
  • Remote test feature


  • Detection Principle: Measurement of heat using a thermistor
  • Sampling Frequency: Once every four seconds
  • Supply Voltage: 8.5 V dc to 33 V dc
  • Supply Wiring: Two wire supply, polarity sensitive
  • Power-up Time: < 20 seconds
  • Minimum: ‘detector active’ voltage: 6 V
  • Holding Voltage: 5 V - 33 V
  • Minimum Holding Current: 8 mA 
  • Minimum Voltage to Light Alarm LED: 5 V 
  • Alarm Reset Voltage: < 1 V 
  • Alarm Reset Time: One second 
  • Alarm Indicator: Integral indicator with 360º visibility
  • Operating & Storage Temperature: -40ºC to +70ºC


  • Open-web casing that enables air to flow freely across a thermistor which measures the air temperature every two seconds 
  • A microprocessor stores the temperatures and compares them with pre-set values to determine whether a fixed upper limit - the alarm level - has been reached
  • Detectors the microprocessor uses algorithms to determine how fast the temperature is increasing

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