An imaging device having a sheet restraint sensing system is disclosed. The system includes a frame having an opening, a linear sensor strip located on the frame having a length, and a media tray having a sheet restraint that presses against the linear sensor strip when the media tray is located in the opening. The sheet restraint is constrained by the media tray to move relative to the media tray no more than a maximum adjustment displacement. The maximum adjustment displacement is less than the length of the linear sensor strip. Other systems are disclosed.