1M* 1 Ratings and Specifications EE-SPX-W Item Models EE-SPX302-W2A, EE-SPX402-W2A EE-SPX304-W2A, EE-SPX404-W2A EE-SPX306-W2A, EE-SPX406-W2A Sensing distance 3.6 mm (slot width) Sensing object.