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WLD4FP-213121A0ZZZ
SICK WLD4FP-213121A0ZZZ W4F polarized retro-reflective sensor with Retro-reflective, dual-lens system, 0–4.5 m sensing range, 1 push-pull pnp/npn output and m8 connector, 3-pin.
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Verified SICK ordering and technical data for WLD4FP-213121A0ZZZ, SICK part number 1121472.
Confirm the sensing geometry, connection, output logic before installing WLD4FP-213121A0ZZZ.
Retro-reflective, dual-lens system
Apply the manufacturer operating-range and target/background guidance; the recommended range is 0.035–3.9 m with P250 reflector.
Optical geometry
This variant is intended for object detection across a reflector-based sensing path. Confirm target behavior and mounting geometry in the application.
Do not substitute another W4F type solely because the housing looks the same. Verify the full type code, numeric SICK part number, optics, output behavior and connection.
Use current SICK documentation for wiring, configuration and application checks.
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Answers to common identification and integration questions for this exact sensor.
SICK lists numeric part number 1121472 for type WLD4FP-213121A0ZZZ.
WLD4FP-213121A0ZZZ uses retro-reflective, dual-lens system with a specified sensing range of 0–4.5 m.
It provides 1 push-pull pnp/npn output, uses light switching and connects by m8 connector, 3-pin.
No IO-Link interface is specified for this exact variant; it uses a conventional switching output.
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