The IR seeker for Lego Mindstorms EV3 robots is an infrared transmitter that can detect obstacles up to 70 cm. It is very useful to avoid obstacles and stairs for a mobile robot.
The IR seeker for Lego Mindstorms EV3 robots can also receive signals form the IR Beacon for Lego Mindstorms EV3 robots at a distance up to 2 meters, on 4 different channels. This allow your robot to be remote controlled.
Attention, this sensor is not compatible with the Lego Mindstorms NXT robots,