This IR Sensor Module features excellent adaptability to ambient light conditions. It includes a pair of infrared components—a transmitter and a receiver. The transmitter emits infrared light at a specific frequency. When an obstacle is present, the emitted IR light reflects off the surface and is detected by the receiver.

The module uses a comparator circuit to process the signal. When an object is detected, a green LED indicator lights up, and the module outputs a digital (LOW) signal. The detection distance can be adjusted using the onboard potentiometer, with an effective range of 2 to 10 cm. It operates on a voltage range of 3.3V to 5V.

This sensor is compact, easy to use, and features minimal interference—making it ideal for a variety of applications such as:

• Robot obstacle avoidance

• Line-following robots

• Obstacle-detection systems

• Assembly line object counting

• DIY electronics projects