17" Industrial Touchscreen Monitor. The Elo 1790L 17-inch open-frame LCD touch display features a slim design and narrow outside dimensions thanks to the state-of-the-art, energy-saving LED backlight, using less electricity to operate and generating less heat. This compact touch display is designed for touch with proven Elo expertise and reliability built in. The 1790L provides stable, drift-free operation with outstanding image clarity and light..