The residential automation is the technology that allows to converge and to manage the resources of a house (illumination, climatization, security, sound equipment, blinds, cameras, bombs of swimming pool, etc) so that the same one executes tasks preset for the inhabitant, aiming at to offer to greater comfort and praticidade. Its beginning if gave in middle of years 80, with the adaptation of industrial and land technology for the domestic use. This became its limited, superdimensionado and expensive use for its new purpose, therefore the power of the domestic equipment is significantly inferior to the used ones in the other cases. However, with the success of this new technological source, the same one if developed the wide steps and became each more diversified time, making possible the accomplishment of practically any automatic task duly preprogrammed. In years 90 the cabeado system was used on a large scale and centered (evolved of industrial and land the systems), that is, all element that if it desires to automatize must be on to a central office of automation through handles. This system brings great trustworthiness, however it is not applicable to the workmanships concluded beyond demanding a similar minute project of englobar and foreseeing everything what it will be automatized. With this, the residential automation erroneamente passed to be treated as something superfluous therefore even though bathtubs, coffee pots and other item of lesser importance had started to be part of the projects, had to the fact not to be able to be enclosed after this phase. With the turn of the century, the first no-cabeados and decentralized systems had appeared whose functioning is trustworthy.
These systems are much more flexible and adaptable, not requiring great projects or previous infrastructure for its installation. They are characterized for making possible a gradual installation, allowing that the person if makes familiar to the system to the few she makes and it if to adapt in the best way to its daily routine. It enters the main systems of this type are distinguished: command for voice, command for radiofrequncia command for PLC, that uses the proper electric wiring of the place to pass through the data (soon we will have Internet saw PLC in Brazil here). Nowadays we find a great one offers of products of the pursuing, of the most varied prices and for the most varied purposes. This always provides specific projects for each person, aiming at to facilitate its day-by-day and turning themselves toward its real necessity. It was the time where the residential automation was an object of expensive and unattachable desire, today it is a tangible reality for any person who if considers to bring more comfort to its home.