A communication method allows members of an affinity group to obtain up-to-date information concerning the status of other members of the affinity group. The bandgap stage is formed by a first and a second bandgap branch parallel-connected; the first bandgap branch comprises a first diode and a transistor, series-connected and forming a first output node; the second bandgap branch comprises a second diode and a second transistor series-connected and forming a second output node. First and second leads are electrically connected to the light emitting element, and a second resin molded body is applied in the recessed section. The electrical loads are respectively associated with an electrical load group into which the electrical loads are collected with comparable prognostic reliability.