Abstract: A vermin repellent arrangement comprises a repellent storage coupled to a first vaporizer adapted to provide a repellent dosage into a first area in response to a repellent control signal. Means for acoustically detecting a vermin in that area provide a first detection signal in response thereto. The means are coupled to evaluation means to receive the first detection signal and adapted to provide the repellent control signal in response to an evaluation of the first detection signal and a reference signal, that reference signal assigned to at least one pre-defined type of vermin.

Abstract: In one embodiment, a central unit, particularly for use in a network, has a memory (2) for at least one light pattern (L) that is suitable for running on a terminal device (5), a control logic (3) connected to the memory (2) and a communications interface (4) coupled to the control logic (3) for providing the at least one light pattern (L) for the terminal device (5). In one embodiment, a terminal device, particularly for use in a network, comprises a process control unit (10), a communications interface (11) connected to the process control unit (10) and that is set up for downloading at least one light pattern (L), and a memory (12) coupled to the process control unit (10) for storing the at least one light pattern (L).