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.
