Cross switches

 

— cross-type switches are used to turn on / off the lighting system (or other current consumer) from different places. When installing two or more cross switches, any of them can turn on / off the light. This can be very useful when controlling lighting in a large room — in this case, cross switches are mounted in different parts of the object. Also, models of this type are used as intermediate ones, installed between the switches. As independent cross switches are not used.