Animal area movement limiter has unit sending range matched electromagnetic wave and animal placed generator detecting wave and compares these to activate deterrent when threshold exceeded

摘要

The area limitation unit has a generator (3) deterring the animal and an interactive unit (1). The interactive unit generates an electromagnetic wave (OM) with characteristics calibrated for range, so that the receiver electronics (21,22,23) detect the incoming signal and compares it with a reference value corresponding to the distance, setting off the restraining trigger when the coincidence point is reached.