The Wemo Stage is a souped-up light switch for an Apple smart home

There’s a running joke in smart home circles: if a product works as well as a light switch, you’ve got a winner on your hands. Home automation’s attempts to make things more convenient can — as with a lot of technology — end up making it more frustrating. There’s nothing worse than a smart light that doesn’t turn off on command. The look my spouse gives me when he has to get up from the couch to flip the switch because a voice assistant didn’t do its job could be…