【物理】在照相机取景器内的可视信号

signals

time-delay network for analogue signals

bilateral contralateral routing of signals aid, BICROS aid

animal scaring device with means for emission of audible signals

signal transmission of LF- in one and HF-signals in the other direction

myoelectric signals

contralateral routing of signals aid, CROS aid

speed control by code signals, receiver, telegraphic communication