There are basically two ways to install smart lighting in your home. You can install a smart switch, or you can install smart light bulbs. The problem with smart bulbs surfaces when you install them in lamps or sockets that are controlled by the dumb switch on the wall. Turn off the switch and you’ll never be able to control the bulb with an app on your smartphone or tablet, because no electricity is flowing to the bulb.
Smart switches are the better alternative, except that most require a central hub to control them, and—unless you’re comfortable dealing with live wires—an electrician to install them. If you’re a renter, you can forget about smart switches altogether.
Read more: http://www.techhive.com/article/3082008/home-tech/switchmate-smart-light-switch-review-the-fast-lane-to-smart-and-simple-home-lighting.html