At the garage door, the front door, and perhaps the back door, there is an “all out” button. The last person to leave the home presses it. All lights in the home are switched off, except in the area where the all out button has been pressed. To increase safety, certain appliances (coffee machine, iron) can be disconnected from the mains. The dormant consumers (appliances in standby mode) can be switched off, and also the kitchen boiler under the sink. All heating is set to night mode. If desired, all roll-down shutters can be raised or lowered, depending on the time of day. If it is still dark outside (for example in the winter), the lighting in the area where the all out button has been pressed will stay on for a while and then automatically switch off. If it is dark the outside lighting will also come on and automatically switch off after a set time. If, however, it is already light when the person leaves the home, these last two actions will, of course, not be executed. If the home has a burglar alarm, then the last resident to leave the home has to enter the code into the alarm panel. In such a case, a separate all out button is not needed. The alarm system tells the integrated home system that an all out function can be generated. When returning home, the code is entered again. The alarm system now tells the integrated home system that the residents have returned. The heating can then be set to comfort mode automatically.