Series 65 Heat Detector

Product Overview

The Series 65 Heat Detector monitors temperature by using a dual thermistor network which provides a voltage output proportional to the external air temperature. There are four classes of heat detectors in the Series 65 range designed to suit a wide variety of operating conditions.


  • Can be used for applications where smoke detectors are unsuitable.
  • Ideal in environments that are dirty or smokey under normal conditions.
  • Wide operating voltage.
  • Flashing LED and magnet operated test switch option.

Approvals: AS7240.5




9-33 VDC

Quiescent current

45?A at 24 VDC

Alarm current

52mA at 24 VDC

Size inc base

100mm Dia x 50mm H

Operating temperature

-20°C to +90°C (no icing)

Relative humidity

0 to 95% (non condensing)

IP rating

IP23D (EN60529)

Weight inc base

131 grams

Item Numbers


Series 65 A1R (5O°C) Heat Detector- Rate of Rise 


Series 65 BR (65°C) Heat Detector- Rate of Rise


Series 65 CR (80°C) Heat Detector- Rate of Rise


Series 65 CS (80°C) Heat Detector- Static