The Mill PA1200WIFI3 is a model from Generation 3 with many improvements in hardware and software compared to previous generation models, such as: • The super easy Bluetooth connection allows for automatic connection to your Wi-Fi network, regardless of the type of router you have. • The first and only heater with a PID thermostat (Proportional-Integral-Derivative). Once the desired temperature is reached, the device maintains that temperature by reducing the power level. This means more stable heating with fewer temperature fluctuations. • Predictive heating – The device heats the room so that the desired temperature is reached at a specific time. The panel heater features an advanced algorithm that enables it to learn how quickly or slowly the temperature in the room rises or falls. This way, it knows when to start heating to achieve the desired temperature by the time you set in the app. Integrated Wi-Fi: The panel heater has a built-in Wi-Fi module. This means that no hub is required, nor does the thermostat need to be changed. The heater connects directly to your Wi-Fi network. Make sure that your Wi-Fi router has enough capacity for the number of active devices connected to your home network.