Cranford Controls

Exd Explosion Proof Beam Detector

Product Overview

The FIRERAY® Exd flameproof infrared optical beam smoke detector is ideally suited to the protection of large areas with potentially explosive atmospheres. It comprises of an infrared transmitter and a receiver, both of which are ATEX certified for use in group 2, hazardous areas. Together with a battery power supply, the unit can be connected to a zone of a conventional fire alarm control panel or interfaced with an analogue-addressable system via an addressable input module or a zone monitor module.

It has three selectable alarm threshold settings of 25%, 35% and 50% which can be selected to suit the environment; if the received infrared signal reduces to below the selected threshold and is present for approximately 10 seconds the fire relay is activated.


  • Range of 10-100 metres
  • Low current consumption
  • Automatic self check drift compensation
  • Ground level control unit
  • Complies with BS5839 part 5


Voltage Range (Vdc) 11.5 – 28
Current Consumption @ 24 Vdc <16.5 mA (Alarm)
Temperature Range (°C) -20 to +55
Protection Rating IP50 (Controller) IP66 (Transmitter / Reciever)
Operating Range 10 – 100m


Part Numbers

307-007 Exd Explosion Proof Beam Detector