Detail Module LM393 infrared speed sensor modul pulse counting arduino
LM393 Infrared Speed Sensor Detection Module For Arduino Features: Working voltage: 3.3V~5V Dimensions: Approx.3.2 x 1.4 x 0.7cm 5mm Groove width Using wide voltage LM393 comparator Application: Widely used in dynamo speed detecting, pulse counting, etc Output form: Digital switch output (0 and 1) and Analog for Sensitivity.