Ревидиран
This standard specifies the particular requirements and tests for PT systems intended for mounting on walls and/or ceiling. They may be installed flush or semi-flush, surface mounted, suspended or spaced away from the surface using fixing devices.
ПОВУЧЕН
IEC 61534-21:2006 ED1
99.60
Повлачење ступило на снагу
19. 6. 2014.
ОБЈАВЉЕН
IEC 61534-21:2014 ED2