ACE 6500 E18-D80NK Adjustable Infrared Proximity Switch Photoelectric Detect Sensor

The device works by constantly sending a HIGH signal when no obstacle is detected and a LOW signal when an obstacle is detected in its direction. Additionally, there’s a built-in LED indicator that lights up when an obstacle is found. It features an IR sensor that can measure distance between 3 to 80 cm and easy to mount chassis which makes prototyping much simpler.