The Carlo Gavazzi ET1820NPAS is a through-beam photoelectric receiver with a 0–20,000 mm sensing range, designed for reliable long‑distance detection on conveyors and automation lines. It operates from 10 to 40 V DC, delivers NPN complementary NO+NC outputs, and supports light- and dark-switching with adjustable sensitivity to suit varying backgrounds. The unit uses 880 nm infrared light and comes in a rugged metal cylindrical M18 housing with IP67 protection, connected by a cable for easy installation. Typical uses include part presence detection, position sensing on production lines, and other industrial sensing tasks where through-beam accuracy and durability are required.
