An organic optoelectronic device has a first substrate, on which a functional layer stack having at least one first electrode, thereabove an organic functional layer and thereabove a second electrode is arranged. The device comprises a substantially triangular hook member having an opening and a sharp end for hooking the animal. The drivecontrol of the load includes an overheat protection control with a hysteresis characteristic carried out on a temperature of a component of the drive control circuit andor the load. These primary problems include searching for the preamble, determination of the symbol rate, determination of an initial carrier frequency error, determination of an initial carrier phase, and determination of the start-of-message to establish an absolute time marker within the waveform.