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Mini Fire Extinguisher Theft Stopper STI 6255

5 out of 5 stars
£39.83 inc VAT
£33.19 ex VAT
Product Overview

The STI 6255 is a mini theft stopper device designed to help protect fire extinguishers, cabinets, cases etc. against misuse, theft or vandalism. When activated, the compact unit sounds a loud audible warning to attract immediate attention to the protected item.

  • Stop theft, vandalism or misuse of fire extinguishers
  • Sounds a powerful 95 dB (at 1 metre) warning alarm when activated, drawing immediate attention
  • Self contained 9V DC alkaline power source is provided
  • Two methods of operation: magnetic reed switch activation for cabinets and display cases or unique steel contact clip activation for fire extinguisher pins and other free-standing equipment
  • Extremely cost effective and easy to install
  • Three minute automatic reset upon activation
  • Compact design (83mm/3.25" diameter and 25mm/1" deep). Mounts easily next to the extinguisher
  • Does not interfere with the use of protected fire fighting equipment
  • Tough, ABS construction
  • Manufactured in the UK
Additional Information

Protects free-standing and cabinet mounted fire extinguisher and other equipment.

The Mini Theft Stopper is an inexpensive yet highly effective way to protect fire extinguishers and a wide range of other fire fighting equipment from theft or misuse.

The device is compact, highly effective and extremely versatile. It does not interfere with fire fighting in any way and its simplicity of design contributes to its high degree of reliability.

How It Works

For free-standing extinguisher or equipment:
The Mini Theft Stopper comes with a special clip that can be used in several ways. An extinguisher's pull pin may be routed through the holes in both prongs of the clip. The clip is then held in place by the extinguisher's seal and when the seal is broken to use the extinguisher, the alarm sounds. The steel clip can also be placed under any type of equipment. When lifted, the alarm sounds immediately.

For cabinets housing fire extinguisher, fire hoses or sprinkler shut off valves:
The Mini Theft Stopper is mounted next to the door or in the cabinet and its reed switch unit is mounted in the door jam. The matching magnet is mounted on the door in close proximity. When the door is opened the device emits a 95 dB (at 1 metre) warning alarm.

Technical Data
Product Code ST6255
Brand STI Europe
Battery Type

9V Alkaline Battery

Dimensions (HxDia)


Weight 0.50kg
Product Datasheets
FAQs (1)
Q. Must an extinguisher be in a cabinet or on a stand to be able to fit the Mini Theft Stopper?

The mini stopper can be used with or without a bracket/cabinet. It is supplied with a steel clip. The extinguisher pin is then routed through this clip and held in place with the extinguisher seal. When the seal is broken the alarm will sound. Alternatively the steel clip can be placed under the extinguisher and when lifted the alarm will sound.

Pricing & Availability

Model Stock Price
Product Code: ST6255 Stock Level:
Available for pre-order Expected dispatch: 23rd Apr

£39.83 inc VAT

£33.19 ex VAT

Delivery Options

The following delivery options are available on this product.

Standard Delivery

£3.19 inc VAT - Orders will be delivered in 7-8 working days with Evri

Expedited Delivery

£6.19 inc VAT - Orders will be delivered in 6 working days with Evri

Customer Reviews

3 customers have given this product an overall rating of 5 out of 5

Reviews by real customers

All of our product reviews are written by real customers that have purchased this product from us and are published without modification.

Rating: 5 / 5 Stars

Reviewed by:

Very quick service Thank you for your prompt delivery

Published on: 2nd June 2017

Rating: 5 / 5 Stars

Reviewed by:


Published on: 7th March 2017

Rating: 5 / 5 Stars

Reviewed by:

good value for money

Published on: 25th November 2014

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