Honeywell XLS-HFS


Intelligent Heat Detector, Fixed Temperature

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  • Factory New
  • Material Obsolete
Brand: Honeywell Part #: 34131 Category: Manufacturer Part #: XLS-HFS Tag:


The XLS-HFS and XLS-HRS Intelligent Heat Detectors gather analog information from their fixed temperature and/or rate-of-rise heat detecting elements and convert it into digital signals. An on-board microprocessor measures and analyzes these signals. It compares the information to historical readings and time patterns to make an alarm decision. Digital filters remove signal patterns that are not typical of fires, thus eliminating most unwanted alarms.

Continuously running self-diagnostics update device statistics and store them in a history log in non-volatile memory. The history log contains information such as detector type, serial number, and address; manufacture date; hours of operation; analog signal patterns just before the last alarm; and time and date of last alarm.

The electronically coded serial number and address enable controllers on the same circuit to automatically map the location of the detector and use that information in “as-built” drawings.


Weight 0.50 lbs


Material Qualities

Thermal Rating


Production Status

Detection Method



  • 70-foot (21.3m) Spacing
  • 135°F (57°C) Fixed Temperature Detector Type
  • Combination 15°F (9°C) Per Minute Minimum Rate-Of-Rise and/or 135°F (57°C) Fixed Temperature Detector Type
  • Integral Microprocessor
  • Non-volatile Memory
  • Electronic Addressing and Device Mapping
  • Continuous Self-Diagnosis and Storage of Environmental and Operational Data
  • One Red and One Green Status LED
  • Standard, Relay, and Fault Isolator Mounting Bases
  • Design and Manufacture per ISO 9001 Standards


Intelligent Heat Detectors; XLS-HFS/HRS
Honeywell – Data Sheet

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