In addition to the knowledge of installation features, an understanding of how they should work and be located on the area of the apartment, home or garage functional nodes. Providing, for example, the possibility of remote control and/or remote control. For example, the temperature control sensor should be placed as close as possible to the room that will be «frozen». Otherwise, the data displayed by him will be incorrect. This is the most striking example of how experience and knowledge helps in installing systems.