Elgato Eve gathers data on air quality, temperature, humidity, air pressure, energy consumption and more. I received Eve Room and Eve Weather to try it out. Unique about Eve Room is its sensor for air quality, which works very accurately, as I was to discover soon. Eve is also unique in that it manages to comply with Apple’s stringent security requirements. As far as I know, it’s the only HomeKit accessory range that pulls off this trick over Bluetooth.