CipherLab 2564 User Manual page 256

2564 Barcode Scanner
Note: (1) For RS-232 or USB Virtual COM, you can only configure the first scanner that
connects to the cradle. To identify the scanner, you may send the serial command
to have it respond with a beep.
(2) For BT SPP, you can configure up to seven scanners at the same time.
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User Guide
Enter Setup