The SICK WL27-3P2431 is a compact retro-reflective photoelectric sensor equipped with a dual-lens system for detecting objects at very short distances—even without a reflector. It emits a visible red LED beam and delivers precise, high-speed detection in a robust ABS housing rated IP69K. The sensor supports PNP light/dark switching output, features a multi-turn potentiometer for fine sensitivity adjustment, and includes comprehensive electrical protection, making it well suited for demanding industrial environments.

The SICK WL23-2P2430 is a compact retro-reflective photoelectric sensor featuring a dual-lens system and visible red LED illumination. It offers reliable detection across ranges from 0.1 m to 10 m (typically 0.3 m to 7 m with a PL80A reflector) and delivers complementary PNP light/dark switching output. Housed in a robust ABS enclosure with IP67 protection, it includes built-in circuit protections and connects via a 4-pin M12 male connector, making it ideal for industrial automation tasks requiring flexible, dependable object sensing.

The SICK WL12-3N2431 is a compact retro-reflective photoelectric sensor featuring autocollimation (no reflector required), visible red LED illumination, and precision optics for reliable detection up to five meters. It offers fast, complementary NPN light/dark switching output in a rugged metal housing with M12 connector and includes full electrical protection and washdown-grade IP66/IP67/IP69K sealing, making it well suited for demanding industrial environments.

The SICK WLL11G-2B2531P04 is a compact retro-reflective photoelectric sensor featuring autocollimation optics, enabling object detection without a reflector from zero to four meters. It emits a visible red light via an LED, ensures high-precision sensing with a small light spot, and supports both PNP and NPN outputs with selectable light/dark switching. The device incorporates an 11-turn potentiometer for fine adjustment, rugged ABS housing rated IP66/IP67/IP69K, and robust electrical protection, making it ideal for detecting transparent objects in industrial environments

The SICK WL9-3P2432 is a compact retro-reflective photoelectric sensor utilizing autocollimation optics and a visible red PinPoint LED. It reliably detects objects at very short distances, offers a single teach-in button for easy setup, uses a PNP complementary light/dark switching output, in a durable VISTAL® housing with M12 4-pin connector.

The SICK WL9-3P2462 is a compact retro-reflective photoelectric sensor with autocollimation optics, delivering reliable object detection at very short distances up to 0.4 meters. Equipped with a visible red PinPoint LED and a teach-in button for simple configuration, it features PNP light/dark switching, fast performance in a rugged VISTAL™ housing, and a convenient M12 four-pin connector.

The SICK WL9L-N330 is a compact retro-reflective photoelectric sensor with autocollimation optics and a visible red PinPoint LED. It provides reliable object detection up to 3.5 m, featuring a fast response time, stable switching performance, and a durable IP67-rated housing for industrial applications.

The SICK WL4-3P2230 is a miniature retro-reflective photoelectric sensor using a dual-lens system and a visible red PinPoint LED for reliable detection from as close as 0.01 m up to 4.5 m (typically 0.02 to 3.5 m with a PL80A reflector). It features a compact rectangular ABS housing with a 4-pin M8 connector, PNP complementary light/dark switching output, and delivers fast switching performance—less than 0.5 ms response time and 1000 Hz frequency—with full circuit protection in a rugged IP67 enclosure suitable for industrial use.

The SICK WLG4-3P2132 is a compact retro-reflective photoelectric sensor that uses a visible red PinPoint LED light source at 650 nm to deliver reliable object detection from as close as 0.02 m up to approximately 3.5 m with standard reflectors. The light spot size at a 1.5 m distance is around 75 mm in diameter when used with a PL80A reflector. The housing is a small rectangular design with three-pin M8 connector options, and commissioning is streamlined with a single teach-in button and AutoAdapt functionality.

The SICK WLG4S-3P2232VS03 is a compact, stainless-steel retro-reflective photoelectric sensor with a visible red PinPoint LED (650 nm). It supports object detection up to 5 meters without a reflector using autocollimation optics. The sensor features a lockable teach-in button, a rugged IP66–IP69K washdown-ready housing, fast response (< 0.5 ms), and a PNP output with light/dark switching, making it ideal for demanding hygienic and transparent-object detection applications.