Remote Technologies IR-PRO T3 - Manual (Page 26)

Operation
19
CALIBRATE TOUCHSCREEN
This button runs a routine that allows you to calibrate the
touchscreen. Since it normally should not be necessary to calibrate
the touchscreen, this routine is included as a precaution only.
Warning: Do not attempt to calibrate the touchscreen with
your fingertip. Proper calibration requires a stylus or other
fine tip. Do not use metal objects such as ball point pens or
screwdrivers that can damage the surface of the
touchscreen.
Press the Calibrate button to continue.
Follow the directions on the display to complete the calibration
process.