Each label is designed to satisfy the requirements of the British Standards as described below.

BS 5839-1:2017 Clause 25.2f states… (Installation/Commissioning)
Every isolator and protective device that can isolate the supply to the fire detection and fire alarm system, other than the main isolator for the building and where in the case of a switch (whether incorporating a protective device or not) that services only the fire alarm circuit should be labelled “FIRE ALARM”.

BS 5839-1:2017 Clause 26.2f states…(Installation/Commissioning)
All cable joint junction boxes are clearly labelled “FIRE ALARM”.

Your technicians will be prompted to apply this label in both our installation and commissioning checklists.