BS 5518 77th Edition, December 30, 1977
Specification for Electronic Variable Control Switches (Dimmer Switches) for Tungsten Filament Lighting
Includes all amendments and changes through Reaffirmation Notice , May 15, 1999
Additional Comments: OBSOLESCENT * W/D S/S BY BS EN 60669-2-1
Published By:British Standards Institution (BSI)
Safety and some performance requirements for manually operated wall mounted switches. Specifies limits for radio frequency interference.