Banner Engineering Corp.The PresencePlus is a pixel-counting sensor comprising a 512 x 384 CMOS pixel array, programmable microprocessor, controller, lens, lighting, mounting bracket and cable. Banner Engineering Corp.'s sensor captures a 256-level gray-scale image, converts the image to black-and-white pixels, and compares the designated-color pixel count with user-programmed upper and lower threshold values to render a pass or fail judgment of the target. 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