SICK WSU26/2-231 is a single‑beam photoelectric safety switch (sender unit) designed for use with the WEU26/2 receiver in a through‑beam safety guarding setup, and it operates from 24 V DC with a nominal power consumption of 4 W. This front‑fitted variant includes front screen heating for reliable operation in cold or foggy environments, and it carries an IP65 enclosure rating along with a 6‑pin plug + protective earth (PE) connection and an LED indicator on the unit. The part number is 1015747; this model is listed as discontinued by the manufacturer in safety switch catalogs.
