The concept of home automation works by connecting smart devices and sensors (wired or wireless) to a system which act as the main control, and lastly to a graphical user interface for . Examples for smart devices/sensors are like humidity sensors, proximity sensors, brightness sensors, etc. that supports the relevant communication protocols (if required). While the control system may be represented by logic controllers (like PLC or similar devices) as well as SCADA and HMI to provide logical proccessing and graphical interface for end user’s interaction.

The basic working concept for home automation can be summarized as:

• Smart device such as brightness sensor installed in the house will detect the current environment’s brightness.
• When the environment’s brightness is lower than required set value, it will trigger the controller.
• The controller system will then identify the action needed (i.e. switch on the lights).
• The system will then trigger signal to the lights and switch them on.

Of course, user can always manually control the lights via the provided user interface also. (it can be either via PC screen, smartphone, TV, or even touch screen panel)