Returnstar Interactive Tech IQTouch HA1100 Pro User Manual page 67

4.4.2.2 Object Detection
This product supports the object detection function and produces different effects according to the
diameter and size of the input objects.
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If the diameter or the size of the input object is larger than 3 mm or smaller than 8 mm, there is a risk
of identification failure. You are advised to hold the object vertically to the panel when writing.
Fist/palm: identified as an eraser.
Fine Pen (3 mm): suggested to be used during writing.
Thick Pen (≥ 8 mm)/finger: suggested to be used during the function operation
or highlighter operation.
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