Radar is an object-detection system that uses radio waves to determine the range, angle or velocity of objects. The RADAR Trainer (MI-AC20) is a training system, specially designed for educational purposes, operates without any hazardous high-frequency radiation. The principle of a radar system is explained using authentic measurements. It is a very useful trainer for student, they can study signals on Oscilloscope, Measure speed of Object, Vibration and RPM of any fan. It is also very useful to study of properties of materials.