Available from Amazon and the Elgato website, Eve Energy plugs into any standard wall socket and allows users to control whatever's plugged in using the companion Elgato Eve app and Siri voice commands. It connects to other HomeKit-enabled products and can be used in HomeKit Scenes for automatic control over connected devices.
Eve Energy turns any appliance into a smart appliance, but it also has a useful power monitoring feature that will let you keep an eye on how much power a device is using. Eve connects to an iPhone or iPad via Bluetooth, so there's no hub or bridge required for communication.
We previously reviewed the European version of the Eve Energy and found it to be one of the most useful HomeKit-connected products Elgato makes. In the early days of HomeKit, Bluetooth accessories had some trouble staying connected, especially when used remotely, but many of those early issues have been resolved through software and firmware updates. Elgato's line of Eve products, which includes the Eve Energy, the Eve Room, the Eve Weather, and the Eve Door & Window, is more reliable and suffers from connectivity issues.
The Eve Energy is available from the Elgato website and from Amazon for $49.95.