Lutron is an industry leader when it comes to smart lighting, the Caseta is their consumer-friendly line of products which includes smart switches, dimmers, fan control, shades, remotes, and a bridge to control them all. By replacing a switch on the wall as opposed to bulbs in the ceiling you do not lose functionality of the wall controls. The switches look very professional and blend well with other ‘dumb’ rocker style switches. When paired with a hub, users can create scenes, schedules, and control lighting with an app on their phone, by voice or an endless amount of automations. Lutron dimmers are great for older homes because they do not require a neutral wire, they can also replace 3-way switches with a matching pico remote or add an additional control without any wiring whatsoever. Each switch costs around $50 and can be purchased at most major electronic and hardware stores, it takes about 15 minutes per switch to install with a basic understanding of how wiring works. You can also hire a local professional electrician to install them for you. Setup within the app is a breeze.
More advanced systems include RadioRA2 and HomeWorks which is distributed and installed through their professional dealer network