11.   There are models that can be operated with remote controls or wall switches, as well as standard pull chains.

12.   To replace a wall switch, the first step is to shut off the power.

13.   To test a single-pole wall switch, for example, attach the alligator clip to one screw terminal and touch the metal probe to the other terminal.

14.   You can also test three-way and four-way wall switches, pilot-light switches, and timer switches.