Valco Melton's AS sensors have an 8mm sensing area that is capable of seeing the thinnest glue lines. Regardless of background color or box surface, the AS302 reliably detects any adhesive patterns, even stitching or dotting when coupled with Valco Melton's VCX quality system. The AS302's compact design makes it ideal for folder gluers with glue lines close to the rail or even envelope machines. Product Specifications Works with ribbon coating