SICK WL12-B5671 Photoelectric Reflex Switch IP67

The SICK WL12-B5671 is a compact photoelectric reflex switch (retro-reflective sensor) in the WL12 family that detects reflective targets using a built-in emitter and receiver, enabling target presence or edge detection without a separate reflector. It operates on 10 to 30 V DC and delivers an output current up to 100 mA, making it compatible with standard PLC inputs and control circuitry. The unit uses a visible red light source and reflex sensing, so detection relies on reflection from the target or a mounted reflector. With an IP67 enclosure, it withstands dusty and washdown environments, and is commonly used for end-of-line or part-detection tasks on conveyors and packaging equipment where a compact, sealed sensor is advantageous.