4.5–30V LED Panel Voltmeter, Colour Options

Keep a compatible DC voltage visible in a small enclosure. This two-wire panel meter uses a three-digit LED display. It is for makers adding a basic voltage indication within the stated operating range.

• ✅ Read the connected voltage — Three LED digits provide a direct display.
• ✅ Keep wiring simple — Two-wire operation shares measurement and supply.
• ✅ Choose a visible readout colour — Blue, red and green are separate options.
• ✅ Update during operation — The stated refresh interval gives repeated readings.

Keep the input within the verified range

Use the detailed 4.5–30V operating range rather than lower startup claims elsewhere in the text. Check polarity, wiring and the actual module limits before connection.

The display is 0.56 inches with an approximately 500 ms update interval. No certified water-ingress or measurement-category rating is established. A voltage indication does not measure battery health or remaining capacity.

Technical details

• Operating/measurement range stated: DC 4.5–30V
• Display: Three-digit 0.56-inch LED
• Wiring: Two wires
• Update: Approximately 500 ms
• Colours: Blue, red or green
• Package: One voltmeter

Check the wiring and range before adding a clear voltage reference to your DC project.

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