Measurement-Control-Regulation includes the following individual areas, which overlap and only develop their optimum effect when they work together: In measurement technology, real values are recorded that enforce the correct execution of defined processes (control technology). The area of control technology defines the correct execution of the respective parameters of the building and system technology by means of a target/actual comparison (control loop). For example, we control the heating depending on the measured room temperature, solar radiation and time of day, efficiently regulate ventilation systems and record consumption and performance values using our measurement concept.