2-in-1 Digital Voltmeter Ammeter Panel DC 0-100V LED Display
2-in-1 Digital Voltmeter Ammeter Panel DC 0-100V LED Display
2-in-1 Digital Voltmeter Ammeter Panel — Precise DC Voltage & Current Monitoring
Keep a close eye on your electrical systems with this compact 2-in-1 Digital Voltmeter Ammeter Panel. Featuring a bright dual-color 0.56-inch LED display (red for voltage, blue for current), it gives you simultaneous, high-accuracy readings of both DC voltage (0–100 V) and current (0–10 A / 0–50 A / 0–100 A) — all in a housing barely larger than a matchbox. Ideal for DIY electronics, solar setups, battery banks, automotive projects, and workbench monitoring.
Key Features
- Dual Measurement in One Unit: Reads DC voltage and current simultaneously on a clear LED dual-display — no need for two separate instruments.
- High Measurement Accuracy: ±1% precision with a voltage resolution of 0.1 V and a current resolution of 0.01 A, delivering reliable, repeatable results every time.
- Three Current Ranges: Supports 0–10 A, 0–50 A, and 0–100 A ranges. Note: the 50 A and 100 A ranges require an external shunt (not included).
- Ultra-Compact Form Factor: At just 48 × 29 × 21 mm (1.89 × 1.14 × 0.83 in), this panel meter fits neatly into project enclosures, control panels, and DIY builds.
- Wide Operating Temperature: Functions reliably from −10 °C to 65 °C, making it suitable for workshops, vehicles, and outdoor installations.
- Safe & Durable Construction: Built with quality materials and proper insulation to ensure stable operation across demanding environments.
- Versatile Applications: Perfect for automotive, solar/battery systems, industrial control panels, home electrical projects, and laboratory benches.
Technical Specifications
| Working Voltage | 4.5 – 30 V DC |
| Working Current | ≤ 20 mA |
| Display | 0.56-inch LED digital tube (Red + Blue) |
| Voltage Measurement Range | 0.0 V – 100 V DC |
| Current Measurement Range | 0–10 A / 0–50 A / 0–100 A (3 ranges) |
| Voltage Resolution | 0.1 V |
| Current Resolution | 0.01 A |
| Measurement Accuracy | ±1% |
| Operating Temperature | −10 °C to 65 °C |
| Operating Pressure | 80 – 106 kPa |
| Product Dimensions | 48 × 29 × 21 mm / 1.89 × 1.14 × 0.83 in |
| Country of Origin | Made in China |
What's in the Box
- 1 × Voltmeter Ammeter Panel
⚠️ Important Notes:
- For the 50 A and 100 A ranges, an external shunt must be connected regardless of the actual current being measured — without it, the meter will not function.
- The maximum input voltage for the working supply must not exceed 30 V DC to avoid damage to the unit.
- Slight color variation may occur due to monitor settings. Please allow ±1–2 cm dimensional tolerance due to manual measurement.
For general electrical safety guidelines when working with DC measurement tools, refer to the OSHA Electrical Safety Resource.
Frequently Asked Questions
Q: Does this digital voltmeter ammeter panel require a separate power supply to operate?
A: Yes. The panel meter requires a working supply voltage of 4.5–30 V DC (drawing ≤20 mA) to power the LED display and measurement circuitry. This is separate from the voltage/current circuit being measured. No battery is included.
Q: Do I need an external shunt for the 10 A current range?
A: No — the 0–10 A range has an internal shunt and can be wired directly in-line. However, for the 50 A and 100 A ranges, an appropriately rated external shunt resistor must be used; direct connection without a shunt on those ranges will not produce accurate readings.
Q: Can this panel meter measure AC voltage or current?
A: No. This is a DC-only instrument with a measurement range of 0.0–100 V DC. It is not suitable for AC circuits. Always confirm your circuit is DC before connecting the meter.
Q: What applications is this 2-in-1 voltmeter ammeter best suited for?
A: It is ideal for monitoring solar panel systems, lithium or lead-acid battery banks, DC power supplies, automotive electronics, DIY control panels, and home or workshop electrical projects — any application where simultaneous DC voltage and current monitoring is needed.