The SICK WLL190T-2N432 is a compact standalone fiber-optic amplifier designed for both through-beam and proximity detection applications. It provides flexible sensing from near zero up to 4 m in through-beam mode or 480 mm in proximity mode. Featuring visible red LED light, a dual 4-digit display showing set and actual values, menu-controlled teach-in via button, programmable time functions, and a rugged IP66-rated housing, this high-performance fiber amplifier is ideal for industrial automation scenarios requiring precise and versatile object detection.