SunRobotics Sharp IR Analog Sensor GP2Y0A21YK0F  (Black)

This SHARP distance sensor bounces IR off objects to determine how far away they are. It returns an analog voltage that can be used to determine how close the nearest object is. Comes with a 12? long 3-JST interface wire. These sensors are good for short-range detection. For over 1 m distance, we suggest using sonar sensors To use, connect the black wire to the ground, red wire to 5V, and white wire to the analog input. The analog voltage out will range from 3V when an object is only 4? (10 cm) away and 0.4V when the object is 32? (80 cm) away.