Modern Robotics Modern Robotics LEGO Mindstorms IRSeeker V3 Infrared Sensor

Detects IR signals from the HiTechnic IR Beacon or IR ball IR: Wavelength range: 850–940nm / Modulation: 600 and 1200Hz Internal sampling rate: 30 samples per second Typical maximum range: 2.4 m Compatible with Hitechnic Infrared Electronic Ball