Abstract: The invention provides a control arrangement and corresponding method for intelligent control of at least one energy consuming device within a building. The control arrangement comprises a switch component for controlling a first energy consuming device such as a lighting device, heating, ventilation or security device; and/or a computer-implemented control component for intelligently controlling at least one further energy consuming device, such as a heating, air conditioning, ventilation or security apparatus. The switch component and/or the control component are provided within a housing which is mounted within or interfaced to a pattress or wiring box during use. The control component comprises a microprocessor and suitably arranged software configured to receive sensor data obtained from one or more sensors provided in or on the housing, and/or process the sensor data to enable the system to intelligently control the at least one further energy consuming device.