Image Item No. Description  10286-1  (Instructions) for Color Sensor for Mindstorms NXT Catalog: Instructions: MINDSTORMS: NXT  2852725-1  (Instructions) for Infrared Seeker for Mindstorms NXT (Version 2) Catalog: Instructions: MINDSTORMS: NXT  2853216-1  (Instructions) for Infrared Link Sensor for Mindstorms NXT Catalog: Instructions: MINDSTORMS: NXT