Elo TouchSystems ET1502L User Manual page 17

Projected Capacitive Touch Technology
When connected to Windows 7, Windows 10 and most versions of Mac OS X, Android and Linux the touch monitor can detect 10 simultaneous touches.
When connected to Windows XP computers, the touch monitor detects only a single touch.
Refer to Section 2, "Installing the Touch Technology Software Drivers," for instructions on downloading touch drivers for Windows XP.
No calibration is required for this technology.
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User Manual ET1002L, ET1302L, ET1502L