A non-contact infrared obstacle detection sensor designed for detecting objects within an adjustable range. It is widely used in robotics, automation systems, smart vehicles, and industrial counting applications. Compatible with Arduino, ESP32, Raspberry Pi, AVR, and other microcontrollers. Features: Adjustable sensing distance High sensitivity infrared detection Non-contact object detection Built-in LED indicator for output status Strong anti-interference performance Easy installation with threaded housing Specifications: Sensor Model: E18-D80NK Operating Voltage: 5V DC Output Type: Digital (NPN normally open) Detection Range: Adjustable (typically 3cm – 80cm) Detection Method: Infrared reflection Response Time: Fast switching Application: Obstacle avoidance robots, object counting systems, smart automation, industrial detection, conveyor systems