| 摘要 |
An apparatus and method for restricting the movement of an animal into or out of a defined area for training and preventing the animal from crossing into or out of the defined area, e.g., a room within a house or an enclosed or defined space outside of a house, such as a gateway or a doorway, while not affecting surrounding areas. The apparatus and method for restricting the movement of the animal utilizes a receiving device shaped to decrease the peripheral reception an ultrasonic frequency emitted from a transmitter, and thereby decreasing the likelihood of corrective stimulation outside the defined area. The apparatus and method for restricting the movement of an animal also includes a variable duty cycle to achieve substantial power savings and prolonged battery life once the animal does not need continuous corrective stimulation.
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