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7809 Voltage Regulator (Pack of 5) Digital Voltmeter (0 100V) and Ammeter (10A) Dual LED Voltage Current Measurement Module Arduino & Microcontroller Power: Use Arduino & Microcontroller Power: Use with a 9V battery to power Arduino Uno via the VIN pin or barrel jack adapter for portable verify the sensor is properly grounded to prevent electrical noise interference We're available 24 7 to help with your projects and 24 7 expert support included
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