Overview Detects the most difficult color mark contrasts, including 20% yellow on whiteTolerates a ±3 mm shift from the 10 mm focal point to accommodate web flutter and similar variations in target locationProvides a sensing image that measures 1.2 x 3.8 mm at 10 mm from the lensDetects very small and inconspicuous color marks with a small sensing image and fast 50 microsecond response timeOffers choice of models with a visible green, blue or white LEDFeatures push-button programming for easy-to-set static, dynamic, single-point and remote TEACHUses push-button manual sensitivity adjustmentProvides 10 to 30V dc supply voltage with bipolar NPN or PNP outputsIncludes a 0-10 mA analog output for indication of signal strengthFeatures two lens positions and a choice of sensing image orientationsColor Mark DetectionTo position all bottles in the same orientation for label application.DescriptionTo detect botles that are not positioned for labeling, an R55 Expert checks for an inconspicuous color mark on the back seam of foil top wrap.The R55 Expert color mark sensor reliably detects very small color marks and slight color contrasts.