A signal line from a common terminal, which allows the insertion of a terminal of a cable for transmitting high-frequency signals or the insertion of a terminal of a cable dedicated to the transmission of audio signals, is branched into one line which is connected to one end of a high-frequency signal switch and the other line which is connected to one end of an audio signal switch, respectively. The gesture-based animal trainer is configured to be used by a person that provides gesture commands to an animal. The cam element is rotatably mounted in a flexible encircling element which is displaceably connected to the cam follower element on a plane that is perpendicular to the rotational axis of the cam element. The measurementcontrol element is configured to measure voltages across the respective batteries and, based on the voltages, selectively operate the bypass circuits to divert electrical current to or from the batteries through the respective bypass circuits. The information may be presented in textual or graphical form. The invention is applicable to the field of construction building.