Adjustable distance and reliable sensing: The infrared obstacle avoidance sensor outputs a digital signal (low level) and can detect working distances from 2 cm/0.78 in to 30 cm/11.81 in. The detection distance can be precisely adjusted using a potentiometer knob. Flexible dual output: The sensor module provides a digital OUT interface that can be directly connected to a microcontroller (3.3V5V adaptive) and an analog signal output for realtime distance feedback. It is compatible with a 5V relay. Clear status indicators and compatible logic: A dualcolor LED indicates power (red) and obstacle detection (green). TTL logic output is low level (0V) when an obstacle is detected and level (5V) when the path is clear. Easy to use with low interference: This photoelectric switch with transmitter and receiver tubes offers adjustable detection distance via the potentiometer, along with low interference, making it easy to assemble and integrate into projects. Practical applications: Mobile robots and autonomous vehicles need adjustable obstacle sensing to navigate environments safely and reliably. Conveyor or automation systems can trigger safety or control actions when objects enter a defined range. Realtime distance feedback can be used in robotic grippers or precision automation to improve control and response. Key specifications preserved: Detection range: 2 cm/0.78 in to 30 cm/11.81 in, adjustable via potentiometer Outputs: digital OUT compatible with 3.3V5V MCUs, and analog distance output Relay compatibility: works with 5V relays Indicators: red power LED, green obstacle LED TTL output: 0V when obstacle detected; 5V when clear Construction: photoelectric switch with transmitter and receiver tubes, designed for low interference and easy assembly