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5. When the low voltage alarm rings out, please replace the batteries
to make sure the lock work well.
6. When replacing the batteries, please notice the positive and
negative poles.
7. Please make sure the mechanical keys are in safekeeping.
8. Do not scratch the fingerprint scanner with hard or sharp objects.
9. Do not use your fingernail to scratch the fingerprint reader.
10. Please use soft cloth to wipe the fingerprint scanner surface when
it is wet.
11. When acquiring the fingerprint, please put your fingerprint on the
scanner flatly.
12. If the lock cannot rotate smoothly or in the wrong place, please
ask a professional to add some machinery oil.
13. Please keep the rotating parts oiled to make sure their smooth
drive and longer life span. Examine once half year or one year is
suggested.
14. When using the lock, please put some graphite powder or pencil
core powder into the lock core groove regularly or when the
mechanical key cannot infix or pull out smoothly. Please do not add
any lubricant oil because that may paste on the mechanical spring
and hinder the lock running.
4.2
Notice for use
4.2.1
When put the finger on the fingerprint scanner and hear short sound
two times, but fail to open the door:
A. This fingerprint is invalid. Elimination: use a valid fingerprint or open
the door by password or mechanical key.
B. This fingerprint has been deleted. Elimination: use a valid fingerprint
or open the door by password or mechanical key.
C. fingerprinted in the wrong way. Elimination: put the finger on the
