NA 031
DIN Standards Committee Firefighting and Fire Protection
Draft standard
[Withdrawn]
DIN EN 54-4
DIN EN 54-4
Components of automatic fire detection systems; power supply equipment; german version prEN 54-4:1989
Title (German)
Bestandteile automatischer Brandmeldeanlagen; Energieversorgung; Deutsche Fassung prEN 54-4:1989