DS-K1F820-F Fingerprint Recorder·User Manual
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Do not aim the device at the sun or extra bright places. A blooming or
smear may occur otherwise (which is not a malfunction however), and
affecting the endurance of sensor at the same time.
Please use the provided glove when open up the device cover, avoid
direct contact with the device cover, because the acidic sweat of the
fingers may erode the surface coating of the device cover.
Please use a soft and dry cloth when clean inside and outside surfaces
of the device cover, do not use alkaline detergents.
Please keep all wrappers after unpack them for future use. In case of
any failure occurred, you need to return the device to the factory with
the original wrapper. Transportation without the original wrapper may
result in damage on the device and lead to additional costs.
Improper use or replacement of the battery may result in hazard of
explosion. Replace with the same or equivalent type only. Dispose of
used batteries according to the instructions provided by the battery
manufacturer.