KNACRO Waterproof Monitor 2-Wires DC 3.3-30v 12v 24v 30v Volt Battery Meter Voltage Tester Automative Electric Cars Gauge Small Digital Voltmeter GREEN 0.52" LED Display (DC 3.3-30V, Blue)
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<b>[Product Information]</b><br>
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<li>Measure voltage: DC 3.3-30V (two wires Access)</li>
<li>Input Polarity: DC voltage</li>
<li>Display: Three 0.52" digital LED Tube</li>
<li>Display Color: GREEN</li>
<li>Refresh rate: about 500mS / times</li>
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