Electric fence monitoring system with energizer, responder and receiver

摘要

Electric fences have been used for many years to control the movement of animals but where these fences have spanned large distances it has been very difficult to ensure that the fence is effective at the perimeters of the distance without continual supervision of the fence. The invention relates to a monitor which has one or more responders, preferably located at remote points of the fence which can transmit a return signal to a receiver at a convenient point to indicate the effectiveness of the fence.