tado° controls the heating via a smartphone app and makes conventional thermostats superfluous. With the help of the app on the residents` smartphones, tado° knows where they are and for example turns down the heat when the last person has left home. It is operated via the smartphone. Accordingly the tado° box is characterized by a very reduced and timeless design that elegantly fits into different environments. Except for the emergency button ‒ in case the smartphone is not working ‒ there are no controls on the box.