Epson PERFECTION 1240U Reference Manual page 28

Assigning an application to the buttons
Make sure the application supports "Scanner events" and then
follow the steps below.
1. Double-click the Scanners and Cameras icon in Control
Panel.
2. In the Scanners and Cameras Properties dialog box, select
your scanner from the installed scanners and cameras list.
Click Properties, and then select the Events tab.
3. Select a desired button from the Scanner events list and then
select the check box of the desired application in the Send to
this application list; clear the rest of the check boxes.
Note:
❏ If multiple applications are selected, when the button is pressed,
a dialog box appears to prompt you to select just one from the
list.
1-18
Using the Buttons