Available in PNP and NPN outputs, position sensing limit switch can detect polarity change in standard steel tube as magnetic piston moves through hydraulic cylinder. Solid-state, tie-rod-mounted switch works with 1.5 to 4 in. bore Series 2H, 3L, and 2A cylinders and provides multiple position sensing because it can be located anywhere along cylinder to signal end-of-stroke or mid-stroke locations. Non-intrusive design maintains pressure envelope integrity and is less prone to damage and leaks.