Wemo has handily solved a common complaint lodged against smart light switches: Many don’t support three-way circuits, and the ones that do typically require the presence of a companion switch at the other location(s) controlling the circuit, thus increasing the cost and the complexity of any installation. The Wemo WiFi Smart Light Switch 3-Way doesn’t, and it can also be used as a single-pole switch. This new switch looks identical to Wemo’s older single-pole switch, so it will blend right in if you have that device installed elsewhere in your home. The only difference is on the backside of the unit, where the additional wiring required for a three-way installation snakes out. This extra wiring is the only issue I had with the switch. Because the Wemo uses pigtails (versus backstabs) to connect to your in-wall wiring, you’ll need five wire nuts (included with the kit) to connect everything together. That’s a lot of hardware to jam into the typical junction box, although I was lucky to be installing my review unit to one side of a two-gang box, so I had a little extra room to work with. Can’t train the kides to turn off the lights when they’re not needed? The Wemo app can do it...