Mill Wi-Fi socket contains electronic components that generate some heat. The temperature sensor is positioned at the bottom left of the device (when it’s placed upright)
If the Wi-Fi socket is mounted upside down in the wall outlet, the temperature sensor will be affected by the self-heat from the internal components. We therefore strongly recommend mounting the socket upright, so that the Mill logo is the correct orientation. If your wall outlet is positioned horizontally, we recommend placing the socket mounted pointing out to the right, so that the power plug is on the left side. This will ensure that the temperature sensor shows correct values