These Digital Voltmeter Blocks contain a voltmeter and seven segment display that can measure voltage down to about 2VDC, which make these perfect for testing the voltage from our 3VDC Battery Blocks. They can be a quick verification of the health of your batteries or can be used to measure more complex relationships: connect the voltmeter in parallel with a component that is drawing considerable current to see the voltage-drop. You might compare the difference in voltage drop between the Light Block and LED Block or see the difference between one Light Block or two in series.

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