OMRON Color Mark Sensor E3M-VG27 2M OMRON Color Mark Sensor E3M-VG26 OMRON Color Mark Sensor E3M-VG22 2M OMRON Color Mark Sensor E3M-VG21 OMRON Color Mark Sensor E3M-VG17 2M OMRON Color Mark Sensor E3M-VG16 OMRON Color Mark Sensor E3M-VG12 2M OMRON Color Mark Sensor E3M-VG11