Centralized refers to subtypes of wired and wireless smart-homes, in which equipment is controlled via a central controller. It is a microcomputer with many connectors for connecting external devices. Such a controller receives signals from external devices, processes the incoming signals and sends commands to actuators

                      Advantages and disadvantages

The advantages of centralized solutions include the ease of control of all home subsystems using a single device. There is no need to program each sensor and piece of equipment separately from the others, thereby spending a lot of time. It is enough to load scenarios into the controller, so then the whole structure will work in automatic mode. Another benefit is its compatibility with a large list of equipment.
There are some shortcomings, though. The main shortcoming of a centralized scheme is its low reliability. If the central controller suddenly fails, all automation will stop working. Despite the fact that control devices are designed reliable, a small probability that the automation will be switched off still exists. Another shortcoming is its rather high cost, which is explained by the scheme’s multifunctionality.