Enhance your LEGO MINDSTORMS NXT creations with an Infrared Link Sensor! With 3 NXT-G blocks, you'll be able to build robots that can communicate with other devices, including the MINDSTORMS RCX, LEGO IR remote-controlled trains, and LEGO Power Functions motors. Includes 1 Infrared Link Sensor. Does not include connector cable. This is the individual component, and does not include the NXT Intelligent Brick, software or any accessories. It requires the complete LEGO MINDSTORMS NXT set (#8527 or #8547) for use.