Edwards Signaling 284B-PL


Heat Detector, 194°F (90°C), Fixed Temperature

1 in stock

  • Factory New
  • Material Obsolete
Brand: Edwards Signaling FireAlarm.com Part #: 005129 Categories: , , Manufacturer Part #: 284B-PL Tags: ,


280B-PL Series heat detectors offer fixed temperature or combination rate-of-rise and fixed temperature detection.

Rate-of-Rise: A temperature increase at the sensor of 15°F (9°C) or more per minute activates the rate-of-rise feature. This closes the contacts in the sensor to transmit the alarm condition to the fire alarm control panel. When the rate-of-rise element alone has been activated, the sensor is self-restoring.

Fixed Temperature: If the temperature of the center disk rises to the sensor’s rated temperature, the fixed temperature element activates. This closes contacts in the sensor and transmits an alarm condition to the fire alarm control panel. The fixed temperature element is non-restorable and, when activated, the detector must be replaced. The need for replacement is indicated when the center disk has fallen free from the detector.


Weight 0.30 lbs
Dimensions 1.60 × 4.50 × 4.50 in

Detection Method

Thermal Rating


Production Status

Product Notes

Replacement: 5604


  • UL listed for 50 ft. (15.2m) spacing
  • Single pole — normally open contact
  • Low profile with mounting plate
  • Pure white finish
  • Mounting flexibility with screw terminals
  • Easy twist-on installation
  • On-site testing of rate-of-rise feature
  • Positive operating indication — for fixed temperature element


280B-PL Series; Rate-of-Rise / Fixed Temperature Heat Detectors
Edwards Signaling – Data Sheet
280 Series Heat Detectors
Edwards Signaling – Catalog Page
280 Series Heat Detectors
Edwards Signaling – Installation Instructions


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