LM393 Speed Sensor Detection Speed Module For Arduino<br>Features:<br>Working voltage: 3.3V~5VWeight: 8gDimensions: Approx.3.2 x 1.4 x 0.7cm5mm Groove widthUsing wide voltage LM393 comparatorApplication: Widely used in dynamo speed detecting， pulse counting， etcOutput form: Digital switch output (0 and 1) and Analog for Sensitivity.<br>Package included:<br>1 x Speed sensor