Cranford Controls

RIU Remote Indicator Units 24Vdc

Product Overview

The RIU unit is used to give a remote indication of the status of a single or groups of fire detectors in alarm state utilising
an LED with a wide area of illumination and high on/off contrast.

The units are compatible with the majority of conventional and addressable systems and can also be used for security
and process control applications.

The standard version is a single gang flush mount unit, with or without ‘Fire Detector Operated’ text and also available
with a deep back box for surface mounting.


  • Direct fit to a single gang deep back box
  • Text is available in other languages
  • IP66 weatherproof version available


Type Flush mount Surface mount Weatherproof
Voltage range (Vdc) 5 – 28
Nom. current consumption (mA) 24
Protection rating IP42 IP42  IP66
Boxed weight (kg) 0.038 0.095 0.475
Colours available White (ABS fire retardant plastic

Part Numbers

502-001 Blank, single gang, flush
502-002 Blank, single gang, surface
502-003 “Fire Detector Operated” text, single gang, flush
502-004 “Fire Detector Operated” text, single gang, surface
502-011 “Fire Detector Operated” text, single gang, weatherproof, surface