Possible cause:
The RFID may not be installed correctly.
To ensure the RFID functions properly, please follow these guidelines:
Make sure there are no obstacles or large areas of bare grass within 5 feet around the RFIDs, and that the edge is straight.
There is a clear boundary beside the RFID.
Each zone should be wider than 6 feet.
The ground under the RFID should be flat.
Avoid placing wires or strong magnet devices within 12 inches of the RFID to avoid signal interference.
The path between each zone should be shorter than 20 feet, and any steps on the pathway should be less than 1.5 inches in height.