Orbis Heat Detector

Product Overview

The Orbis Heat Detector monitors temperature by using a single thermistor network which provides a voltage output proportional to the external air temperature. There are seven classes of heat detectors in the Orbis 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 smoky under normal conditions
  •  Reduced incidence of false alarms
  •  Increased reliability of detection



Operating voltage 8.5 to 33 VDC
Quiescent current 65µA at 24 VDC
Alarm current 40mA at 24 VDC
Remote output 1.2k to -ve supply
Size 100mm Dia x 51mm H inc base
Operating temperature -40°C to +70°C (no icing)
Relative humidity 0 to 98% (non condensing)
IP rating IP23D (indoor use)
Weight 130 grams inc base

Item Numbers

Orbis A1R 50°C Heat Detector- Rate-of-Rise


Orbis A2S 50°C Heat Detector- Static


Orbis BR 65°C Heat Detector- Rate of Rise


Orbis BS 65°C Heat Detector- Static


Orbis CR 80°C Heat Detector- Rate of Rise


Orbis CR 80°C Heat Detector- Static