The Elo Touch Solutions 2218 series controller is designed to
work specifically with AccuTouch resistive touchscreens. Building technology
with coordinating components enables a much smoother design and user experience.
2701 series controller is a single touch unit that works through serial
interface or via USB. It is a full-speed, self-powered, USB device. By default,
the controller communicates over a RS-232 serial link. If, however, a USB cable
is connected, the controller switches to an exclusively USB communicating mode.
IntelliTouch controllers are designed and manufactured to work specifically
with IntelliTouch SAW touchscreens for optimal performance. The controller
maintains a no-touch reference signal. This reference signal is continuously
updated to adapt to electronic drift and effects of contamination such as dirt
and scratches. The live signal is compared to the reference signal to detect