What is the fine-grained topic of the following text: Though it looks like a simple plug-in outlet extension, the Belkin WeMo Switch can be turned on and off through an app on your phone, allowing you to switch on your flattening iron ten minutes before you’re ready to use it, or turn the coffeemaker on so that the first cup is pouring just as you enter your kitchen in the morning. Only return the topic.
Smart home devices: Belkin WeMo Switch