Allen-Bradley PHOTOSWITCH® 42CA-B2LPBE-A2 Photoelectric Sensor, Cylindrical, 100 mm, Visible Red Sensing Beam, 1 ms Response Time, PNP Output

The 42CA 18 mm cylindrical family of general purpose photoelectric sensors is intended for light to medium duty industrial applications. The 42CA family provides an indication if the sensor operation is unstable. An indicator flashes if the signal level is too close to the detection threshold. This helps for easy alignment of the sensor and forewarns against detection of a background.