Night Owl CS-Key-4GB - Manual (Page 10)

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4.
Go to “File”, “Save” the document and safely remove the
keychain from your computer.
5. Turn on the keychain once to initiate the reset.
When your
keychain’s battery is too low, the time may
reset to factory default. You will need to reset the time
again if you want your recorded files to have the correct
recording time.