A light switch is the simplest of electrical devices. Flip the switch, electricity flows. Flip it again, electricity stops. Lights on, lights off. That's great for a small room with one entrance.

Managing the complex systems of the modern home can become pretty tricky. While mowing the lawn and hanging pictures on the wall are relatively straightforward tasks, plenty of additional ...

A light switch is the simplest of electrical devices. Flip the switch, electricity flows. Flip it again, electricity stops. Lights on, lights off. That’s great for a small room with one entrance.