Identification of BSP Threads

In the attachment below you will see  how to identify  the size of a BSP thread.

Identification of BSP threads


Identification of PSL Couplings

To identify if a coupling was made by PSL Fire & Safety please use the attached document below. 

PSL Coupling Identification


Technical Abbreviations 

Not sure what some of the abbreviations mean? Here is some commonly used ones in the industry.



Storz Size Guide

Size Guide PDF


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Product Reviews

Let customers speak for us

322 reviews
Wireless 10 year fire alarm

Easy to install. Have yet to program the wireless side. If they last 10 years they will be great but I probably won’t be around to know!!

Magnetic fixing plates

Great product,works really well,highly recommend

Small, powerful, and it works.

Pretty much what it says in the title. This torch fits on my keyring, is very bright, and if it runs out of charge I just plug it into the nearest USB port and recharge it again.
It's very convenient.

10 Year Photoelectric Wireless Smoke Alarm 2020