Product Specification:◆ TCRT5000 infrared reflection sensor is adopted◆ Detection reflection distance: 1mm~25mm applicable◆ Operating voltage: 3.3-5V◆ Outpt form: digital switch output (0 and 1)◆ Fixed bolt holes are provided for easy installation◆ Use wide voltage LM393 comparator◆ With multi - turn adjustable precision potentiometer to adjust the sensitivity◆ Comparator output, signal clean, good waveform, strong driving capacity, more than 15mAWiring Description:1. VCC: Connect the positive pole of power supply (3-5V)2. GND: Connect to the negative pole of the power supply3. DO: TTL switch signal output4. AO: Analog signal outputPackage include:6 x TCRT5000 Infrared Reflective Sensor Module