Standards
[CURRENT]
NF S61-984
; NF EN 54-4:1997-12-01
NF S61-984
; NF EN 54-4:1997-12-01
Fire detection and fire alarm systems. Part 4: power supply equipment
Title (German)
BRANDMELDEANLAGEN. TEIL 4: ENERGIEVERSORGUNGSEINRICHTUNGEN. (EUROPAEISCHE NORM EN 54-4)