Potter RHA

Rate of Rise/Fixed Temperature Heat Detector

  • Factory New
  • Material Obsolete
Brand: Potter FireAlarm.com Part #: 3354 Category: Manufacturer Part #: RHA


The combination Rate of Rise/Fixed Temperature Heat Sensor (RHA) is a listed Analog/Addressable combination temperature heat sensor compatible with any fire alarm control panel that has the Potter/Nohmi protocol. The heat sensing portion utilizes a proven thermistor for accurate and reliable heat detection. The sensor and base (not included) are made of a durable plastic in an eggshell white (off white) to blend in with the ceiling.

The RHA is UL and cUL listed with a selectable fixed temperature point from 135° to 174° and a rate of rise feature. The rate-of-rise operates when the temperature increases 12-15°F occurs. The heat sensor is ideal for installations needing the earlier heat detection.

The RHA has two LEDs that allow for 360° viewing. The sensor is compatible with any of the Potter/Nohmi bases and simply twists on. The RHA is addressed using the hand held programmer or the control panel addressing function.


Weight 0.20 lbs
Dimensions 1.50 × 4.00 × 4.00 in

Potter Electric Signal Company, LLC





Unit of Measurement

EA (Each)



Thermal Rating

135°F, Programmable

Production Status


Detection Method

Fixed Temperature, Rate-of-Rise


  • Adjustable fixed 135° to 174° Fahrenheit
  • Rate of rise feature with 10-12°F per minute detection
  • LEDs for 360° viewing
  • Low profile
  • Reliable detection technology

RHA; Rate of Rise/Fixed Temperature Heat Detector


Potter - Data Sheet

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