Rate of Rise (ROR), Fixed Temperature Heat Detector

For all types of fire and safety alarm applications.

Salient Features

  • Fixed temp and combination fixed- temp/rate-of-rise
    135°F or 194°F ratings.
  • Measure temperature from -40°C to +85°C range, and up to +200°C for short periods.
  • Communication protocol IEC 60870-5-104 via LAN interface.
  • RS 232 interface, RS 485 and ethernet for LIST network and data communication with optional MODBUS TCP or IEC 60870-5-104.
  • Mounting flexibility with screw terminals.
  • Positive alarm indication – for fixed temperature element.
  • Intelligent fire detector with decentralized intelligence.
  • Automatic function self-test, CPU failure mode, alarm and operating data memory, alarm indicator, soft-addressing and operating indication.

Other Features

  • Interfaces seamlessly with a wide range of panels.
  • Attractive new design for fast and easy installation.
  • LEDs for 360° viewing.
  • Low profile design.

Heat detector is a type of fire detection device that detects changes in temperature and triggers an alarm when the temperature reaches a predetermined threshold.

Heat detectors are designed to detect heat in areas where smoke detectors may be prone to false alarms, such as kitchens or high cooking activity areas.

They can be classified into two main categories: fixed temperature detectors and rate-of-rise detectors.

Fixed Temperature Heat Detector: These detectors are activated when the ambient temperature at the detector location reaches a predetermined fixed threshold. When the temperature surpasses this set point, the detector triggers an alarm signal. Fixed temperature heat detectors are simple and reliable but lack the ability to detect gradual temperature changes.

Rate-of-Rise Heat Detector: Rate-of-rise heat detectors are designed to detect rapid temperature increases. They have a built-in mechanism that measures how quickly the temperature is rising. If the rate of temperature rise exceeds a specified threshold, the detector activates an alarm. This type of heat detector is effective in situations where fires can develop rapidly, such as in areas with flammable materials.


  • Kitchens
  • Garages
  • Boiler rooms
  • Industrial facilities
  • Warehouses
  • Attics
  • Elevator shafts

Standards and Certifications

  • UL 521
  • ISO 7240
  • CE Marked
  • CSA Certified
  • ULC Listed

Also check out Ionization, Photoelectric Smoke Detector.