Features: Provides excellent color contrast sensitivity, detecting 16 levels of gray scale. Optimizes contrast by automatically choosing a red, green or blue sensing LED. Maximizes performance in low-contrast or high-gloss applications, and when registration marks are inconspicuous Offers configurable light- or dark-operate outputs and optional 30 milliseconds ON/OFF-delay. Performs 10,000 actuations per second (10 kHz switching frequency).