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Grove interface?compatible Wide supply voltage range: 2.5V-7V Interface For all Grove users (especially beginners), we provide you guidance PDF documents. Please download and read through?Preface - Getting Started?and?Introduction to Grove?before your using of the product. The 80cm Infrared Proximity Sensor is a General Purpose Type Distance Measuring Sensors, this sensor takes a continuous distance reading and returns a corresponding analog voltage with a range of 10cm (4") to 80cm (30"). Can be used in TVs,personal computers ,cars and so on.