Octopus Hunt Sensor is a sensor based on TCRT5000 photoelectric sensitive element. It can sensitively detect the infrared reflected signal. Together with Arduino specific sensor shield Hunt Sensor can be widely used in many fields ranging from performing black and white line detection obstacle detection to shredding detection for fax machine or paper shredder meter pulse data sampling and other related works; Adjustable sensitivity (shown in blue digital potentiometer adjustment); Three pins electronic building blocks interface: input 5V - GND; S pin output digital voltage signal 0-1; Operating voltage: DC 5.0V - Power supply needs: 5V - Interface type: Analog - Pin Definition: 1-Signal 2-VCC 3-GND - Fast response and high sensitivity - Simple drive circuit - Stable and long life