Before beginning in earnest to replace a light switch, go first to the electrical panel and cut power to the room where you’re going to be working. To do this, first flip the switch on.

When a switch is closed (on), it makes the circuit complete. Electricity can travel around the circuit. The doorbell on the right has been replaced in most homes by an electric bell that uses a ...

It doesn’t take long to replace an ordinary light switch with a full-feature dimmer ... to meet the latest requirements of ...