Allen-Bradley PHOTOSWITCH® 42CA-U2KPB-D4 General Purpose Photoelectric Sensor, Cylindrical Shape, 12-1/2 ft Sensing, Visible Red Sensing Beam, 2 ms Response Time, DC PNP Output

Bulletin 42CA 18 mm plastic cylindrical general purpose sensors are ideal for light to medium duty industrial applications. These sensors flash an indicator if the signal level is too close to the detection threshold. This helps you align the sensor and warns against detection of a background or degradation of the application characteristics.