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⑨ Pull out the pen tip perpendicularly and place the new pen tip into
stylus when the tip is badly worn.
⑩ User is able to hang the ultrasonic stylus on the wall with hook. Please
make sure the hook is capable for 0.5kgs or heavier item.
⑪
In order to get the best performance from DB-02C, the stylus shall be
perpendicular to the working area. Acceptable inclination shall be less
than 15º when writing.