EN54-4
EN54 is the current European Standard for fire detection and alarm systems
All new fire alarm installations must now comply with the requirements of the pan-European standard designated EN54 and, to comply with the EU Construction Products Regulations, all such products offered for sale must be tested and certified to this effect. BS EN54-4 refers to power supplies, both are now mandatory in all fire alarm system installations in the UK and other parts of Europe. Dycon's D2431, D2433 and D2435 (EN54 power supply units) are all 3rd-Party certified by Intertek Testing & Certification Ltd as compliant with these standards. They can be therefore be used in any fire alarm system installation to provide additional power to drive detectors, sounders and other peripherals