Most of our switches in our homes are not smart. In fact they’re dumb. They just have an up and a down. Which is fine, unless you want something more advanced. And even then, you either have to hire an expensive electrician or do a dangerous electrical install yourself to put something better in place. At least those used to be your only two options. Now Switchmate changes this. Switchmate is a smart light switch that easily installs over your existing switch.