Abstract: The method according to the invention for determining information on an animal and/or animal milk, in which a sensor unit detects four items of data relating to the health, well-being and/or behaviour of the animal and/or data relating to the quality or composition of the animal milk and/or data relating to a physical, chemical, biological and/or morphological property of the animal milk and uses a transmitting and/or receiving unit (6) to wirelessly transmit said data to a central data unit (10), is distinguished by the fact that activation and/or signalling for data transmission is/are effected separately from the actual data transmission.