Products Menu Panasonic Sensors Mitsubishi Electric Control System Epson Robots Koganei Pneumatics AirTAC Oriental Motor Nitta Moore Tube, Hose and Fitting Convum Vacuum System THK Shimpo Reducer NemaAsia Solutions Patlite Products Vision Sensors Checker® sensors are easy to use and affordable. They are used to check the presence and size of parts and products. Can be used in a wide range of applications where traditional sensors cannot provide solutions.