How to use IR Infrared Obstacle Avoidance Sensor Module with Arduino UNO

This video shows how to connect IR obstacle avoidance sensor with arduino UNO, and how it works

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Code:
int LED = 13; // Use the onboard Uno LED
int isObstaclePin = 7; // This is our input pin
int isObstacle = HIGH; // HIGH MEANS NO OBSTACLE

void setup() {
pinMode(LED, OUTPUT);
pinMode(isObstaclePin, INPUT);
}

void loop() {
isObstacle = digitalRead(isObstaclePin);
if (isObstacle == LOW)
{
digitalWrite(LED, HIGH);
}
else
{
digitalWrite(LED, LOW);
}
delay(200);
}