It a A data delivery system is proposed (1) for detecting and/or storing of a property necessary for the measuring heat consumption and/or analysis measurement data, such as indoor and outdoor temperature, electricity, gas, heating and water consumption, or the like, and/or for controlling the consumption of the property, the exhibits measurement data recording equipment has at least one and at least one Data transmission device as, wherein the measurement data recording equipmentmeasurement data recording equipment and a bidirectional radio system a M-bus enabled the Data transmission device as, what on a M-bus Protocol 13757-4 / - 5 13757-2 / - 3 as well as on a EN EN M-bus Wireless Protocol is based.