Fixed Mount Reader are designed for unattended applications like conveyor lines, kiosks, or sorting lines. Many of these scanners have very high read rates for accurate reading in high-speed applications and normally integrate with other systems for triggering since they don't have a trigger on them. When choosing a Fixed Mount Barcode Reader, the main concerns are the type of barcode (1D vs. 2D) you are reading and how fast they will be moving.
