3 Way Switch Controlling 2 Lights. Three-way wall switches control a light fixture from two locations in a room. Two Way switching to control Light from Two Places in Staircase The following two way switching connection can be used for the same purpose as mention.
A light or lights can be controlled by more than one switch. A wiring diagram will be helpful. Three-way switches are always used in pairs.
This the America English language for you.
Three-way switches are always used in pairs.
The best example of this would be at either end of a long hallway, or at the top and bottom of How do I control my water pump (on/off) from three different location in my house? In the beginning they were called single pole, double throw. But people got tired of using this phase all the time.