The Kasa smart Wi-Fi dimmer switch from TP-Link replaces a standard wall dimmer or switch and lets users control and dim connected lights from a smartphone app or by voice through popular assistants. It connects directly to the home Wi-Fi network, so no separate hub is needed. Brightness can be adjusted to suit the mood or task, and schedules or timers can switch lights on and off automatically, helping reduce energy use and making the home look occupied while owners are away. Because it fits in the existing wall box, it provides a simple upgrade for homeowners, landlords and installers.