The reader is not synchronized for secure communication with the controller.
Follow the steps below to synchronize the reader to the CTE.
1. Test and sync the CTE with the RS-485 reader.
2. Push and release the CTE SCHLAGE button, followed by two
quick pushes on the FDR button.
3. A correctly wired MTB11, MTB15, MT11-485 or MT15-485 will
beep and blink amber three times.
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