WCS3B-LS221D This non-contact absolute position read head comes with integrated display module for direct position value viewing, matched RS485 communication with built-in terminal resistor to guarantee stable long-distance signal transmission. It supports wide installation tolerance for code rail, with automatic dirt detection to remind contamination faults timely. ABS+PC housing adapts to 0–60°C dusty industrial workshops, no mechanical abrasion for long-term continuous operation. Ideal linear position measuring component for automated warehousing, lifting machinery and material conveying production lines.