Cranford Controls

Warning Range

Product Overview

The Extinguisher and Exit Stopper® units help to prevent theft and vandalism of fire extinguishers and misuse of emergency fire doors installed in and around any property. The devices have been designed to offer the maximum level of protection without restricting the legal operation of fire extinguishers and emergency exits. The Extinguisher and Exit Stopper® is ideal for use in schools, colleges, hospitals, nursing homes, hotels, public buildings and a wide variety of other properties where there is a history or threat of unwanted activation of fire extinguishers and emergency exits.
The Extinguisher and Exit Stopper® ranges consist of a sounder unit which is virtually indestructible. The polycarbonate cover has a highly visible ‘STOP’ sign to discourage unauthorised use. When either of the devices are activated, a high frequency sound of 95 dB(A) is emitted, drawing immediate attention to the area, causing the perpetrator to leave or be apprehended. Both devices are easy to install and can be retrofitted to existing fire extinguishers and emergency door installations.


  • Self-contained devices, sturdy and tamperproof
  • Easy to install
  • Highly versatile across a wide range of extinguishers and emergency exit doors
  • Exit Stopper® can protect single or double door applications
  • Exit Stopper® available in either red or green
  • Both variants are powered by a 9V PP3 battery

Part Numbers

314-001 Fire Extinguisher Theft Stopper®
314-002 Emergency Exit Alarm – Single Door
314-003 Emergency Exit Alarm – Double Door

All of STI’s range of warning products are available. For further information, please contact the Cranford Controls sales team.