View Single Post
Old 14th Sep 2021, 6:42 pm   #10
rambo1152
Dekatron
 
rambo1152's Avatar
 
Join Date: May 2010
Location: Manchester, UK.
Posts: 3,030
Default Re: Siemens W28 telephone

In the context of an electrical switch I'm sure it simply means OFF / ON
__________________
--
Graham.
G3ZVT
rambo1152 is offline   Reply With Quote