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⚡️ Precision Voltage Monitoring: Universal DC Digital LED Voltmeter
Get accurate, real-time voltage readings for your automotive, battery, or custom electronics projects. Our compact DC Digital LED Voltmeters offer flexible 2-wire and 3-wire connection modes and integrated reverse polarity protection for reliable, safe operation.
1. Universal 0-100V Voltmeter (3-Wire)
This versatile module allows direct integration into common 5V, 9V, 12V, and 24V circuits without a separate regulator. It is the ideal choice for monitoring battery banks or high-voltage systems.
FeatureSpecificationBenefit & ApplicationMeasurement RangeDC 0 - 100VPerfect for battery packs and solar arrays.Power SupplySelf-powered (2-wire) or External (3-wire)Highly flexible wiring options.SafetyReverse Connection ProtectionWiring errors will not burn out the meter.UsageCar/Motorcycle battery monitoringSimple, direct access to power lines.Display0.28" or 0.36" LEDBright, clear digital readout.
⚠️ Important Wiring Note for the 0-100V Meter
- 2-Wire Mode: Power and Measurement are on the same two lines. MAX 30V DC. Use for simple 12V/24V systems.
- 3-Wire Mode: Separate Power (4V-30V) and Measurement (0-100V) lines. MAX 100V DC. Use for measuring high-voltage lines while powering the meter from a low-voltage source.
2. Compact 0.28-Inch Voltmeter
Designed for applications where space is at a premium—excellent for small enclosures and vehicle panels.
- Dimensions: 30 x 10 x 8.9 mm (Ultra-small footprint)
- Measurement Range: DC 4 - 40V (Ideal for standard 12V and 24V systems)
- Display: 0.28" LED (Red, Blue, Green, Yellow options)
- Accuracy: Automatic decimal point adjustment—two digits below 10V (e.g., 9.99V) and one digit above 10V (e.g., 12.3V).
- Protection: Reverse Connection Protection & Fine Tuning Function.
Note: The input voltage to this specific model must not exceed 40V DC to prevent damage.
3. Standard 0.36-Inch Voltmeter
A slightly larger, clearer display while maintaining a highly compact form factor for easy panel installation.
FeatureSpecificationDimensions33 x 14 x 8.7 mmInstallation Hole23 x 10 mm2-Wire RangeDC 4.0 - 30V (Combined power and measurement)3-Wire RangeDC 0.0 - 100V (Detection) / 4.0 - 30V (Working Power)AccuracyHigh measurement accuracy (± 3%)