Eaton Wi-Fi smart universal dimmer review: Great on paper, less thrilling in person

Eaton's new Wi-Fi smart dimmer comes without one common component that is virtually ubiquitous across today's smart home landscape: A mobile app. Aiming for a "frustration-free setup," Eaton decided to rely on the Amazon Alexa app exclusively for setup and control. In smart home reality, of course, there's no such thing as "frustration free," and while not needing to download, register, and configure yet another smart home app on my phone (I have more than 100 of them currently installed) was freeing, performance problems and a lack of flexibility ultimately hampered my enthusiasm for this device. Let's start with the hardware. The in-wall dimmer requires a neutral wire in the electrical box where it's being installed, and it works with both single-pole and three-way installations (using either Eaton's WACD accessory dimmer or a regular three-way switch).