TÜV Rheinland has tested this product to ascertain that the functionalities of the product or system can be used effectively. TÜV Rheinland has defined a catalogue of tests, which sets out minimum standards for functionality. The test catalogue is based on internationally applicable standards or standards common within the industry and exceeds these requirements. TÜV Rheinland has had all relevant functions of this product or system tested by users who typically use this product or system. Observations and interviews were carried out to establish that the functions meet the specifications in the operating instructions and the test criteria. The keyword "Functionality" confirms that the product meets the test criteria of TÜV Rheinland and the tasks the users must perform can generally be effectively achieved.