This Voice Alarm System label has been designed to satisfy the requirements of the British Standards as described below:
BS 5839-8:2023 Clause 25.1.6c states…
Every isolator and protective device that serves only the voice alarm circuit but incorporates no switch and where in the case of any switch that disconnects the mains supply to both the voice alarm system and to other circuits should be labelled “WARNING. THIS SWITCH ALSO CONTROLS THE SUPPLY TO THE VOICE ALARM SYSTEM”.