Designed for long distance sensing, the OPB715 series reflective sensors are designed to accurately detect paper at a distance of 12.7 mm. While characterized for use with paper, the device is also capable of detecting reflective objects at even longer distances, or it can be used to detect low reflectance materials at shorter distances. The sensor's panel-mount plastic housing shields stray light and is terminated with 18'' wire leads. Four versions are available by output type: open-collector or totem pole in either inverter or buffer configurations. Pricing is $4.90 each/1,000.