Durable metal enclsoure, 6" color touch screen for easy set up and teach, color sensor evaluates RGB and Color Intensity (grey scale) values--great for detecting shades of colors (black, grey, tan, white) and difficult to distinguish chromes, with only 4 simple touch screens to navigate--programming and set up are quick and easy, 16 or 32 color detectors with relay outputs, 110V operation--simply plug into any 110V outlet and you're up and running!