The invention refers to a teatcup part and a teatcup to be attached to a teat of an animal. The microprocessor configures at least one unused channel placed in parallel with one of the operating channels for searching andor tracking the same visible satellite, the unused channel being configured so that the integration period of its integrator counter is different from that of the integrator counter of the operating channel. To this end, circuitry to be protected from ESD is provided with failsafe ESD protection, for example. An electromagnetic shield is provided on the side of the PCB which in use is facing a lossy dielectric in order to reduce the SAR. 40 mm, a tensile strength of not less than 4000 MPa and number of torsion of not less than 15, and produced by multi-stage wet drawing method with a die having an inner peripheral wall made from a single crystal diamond chip or a sintered diamond chip having a diamond particle size of not less than 10 m in at least a final stage. When the Pmax exceeds a reference power vale, the operation mode of the CPU is changed for controlling actual power consumption of the PC.