FAQ
What's a three-way switch?
A pair of three-way switches allows one light to be operated from two locations - like the top and bottom of a stairway.
They must be installed in pairs, and they require appropriate wiring. A three-way dimmer can substitute for one switch in a three-way pair to allow light-level control. A four-way switch creates a third location.
Wiring conditions vary greatly - especially in old houses. Consult a licensed electrician on unusual installations.
Dimmer switches are for incandescent fixtures only - not for use with fluorescent fixtures or ceiling fans!

