![Monoprice 21825 User Manual Download Page 20](http://html.mh-extra.com/html/monoprice/21825/21825_user-manual_1828649020.webp)
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Click the Calibrate button to display the calibration screen. Use the pen to click the red
dots to perform the calibration.
Double-click the PenPressureTest.app file in the Applications > PenInput folder to test the
pen pressure. Click the radio buttons to the left of the colors to change the active color.
Click the brush icon to clear the test area. Drag the Pressure Sensitive slider in the
TabletDriverPanel app to adjust the pen pressure level to the left or right as needed to
decrease or increase the sensitivity. Close the dialog when finished.