A light switch is the simplest of electrical devices. Flip the switch, electricity flows. Flip it again, electricity stops.

Interplay Learning’s on-demand course, “Diagnosing Circuits: Three-Way Lighting,” introduces multi-location light control to expand a technician’s skills and knowledge of electrical circuits and ...

Q: At either end of my staircase I have a light switch that turns the staircase light on and off. The problem is that the switches don’t work correctly anymore ...

All products featured on Architectural Digest are independently selected by our editors. However, we may receive compensation from retailers and/or from purchases of products through these links.