Traditionally, home security was something that you left to the professionals, since all of your stuff was at stake. But plenty of startups are hoping to tempt you into doing it yourself with their plug-and-play (or stick-and-leave) alternatives. Ring, which made its name with wall-mounted video doorbells, is now showing off its new Floodlight Cam. As the name implies, the device combines the company's famous security cameras with a pair of LED floodlights.