6 - Operation
DynaFlex and DynaFlex Pro| Three-way Secure Card Reader Authenticators | Installation and Operation Manual
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6.5
About Sounds
DynaFlex products have a beeper that provides feedback to operators and cardholders about the internal
state of the device:
The device sounds one short beep after it has successfully read a contactless tap, and the cardholder
can safely remove the card or device from the contactless landing zone.
The device emits short beeps continuously when a transaction is complete but the card is still present
in the insertion slot.
The device emits two beeps when reading a card or contactless payment device to indicate a read
error occurred.
The device sounds two beeps when an operator cancels a pending EMV transaction.