Pair of infrared transmitting and receiving tubes: This sensor module includes a pair of infrared transmitting and receiving tubes. It emits infrared light and detects obstacles within its detection area. Obstacle avoidance function: Suitable for robot obstacle avoidance, obstacle avoidance cars, line counting, and black and white line tracking. Adjustable detection distance: Detection distance ranges from 2 to 30 cm, with a detection angle of about 35 degrees. The detection distance is adjustable. Easy to use: The output port (OUT) can be directly connected to a microcontroller port, allowing it to drive a 5V relay. 2–3 practical use scenarios: Autonomous mobile robots: Use for obstacle avoidance to navigate environments safely. Line counting and line tracking projects: Integrate with microcontrollers for line following or counting applications. Simple automation tasks: Use with a microcontroller to trigger a 5V relay based on detected obstacles.