Elo 5551LT 55-inch Interactive UHD Touchscreen Display - 55-inch Widescreen LCD, Infrared Multi-touch, USB Controller, 4K Interactive Digital Signage, Clear, Grey. - E401558 The Elo 5551L 55-inch Ultra High Definition (UHD) touchscreen signage display features phenomenal 4K resolution image quality in a slim, integrated package. Designed from the bottom up for retail, hospitality, enterprise, commercial real estate, education, corporate meeting rooms, lobbies and other commercial applications, the large widescreen 5551L offers a bright, 450-nit LED panel, with a high-quality, interactive canvas for attracting and engaging consumers. With a 10-touch 'tablet-like' performance, the infrared touchscreen technology provides higher touch sensitivity and brightness in a large 55-inch size.