Waterproof DC 4-100V LED Digital Voltmeter Panel Gauge
Waterproof DC 4-100V LED Digital Voltmeter Panel Gauge
Waterproof DC 4-100V LED Digital Voltmeter Panel Gauge
Stay in full control of your vehicle's electrical system with this compact, waterproof DC Digital Voltmeter Gauge. Measuring DC voltages from 4V to 100V with ±1% tolerance, it delivers fast, accurate readings on a bright three-digit LED display — available in red, blue, or green. Whether you're monitoring your car, motorcycle, boat, bus, or trailer battery, this panel-mount meter keeps you informed at a glance.
Key Features
- Wide Voltage Range: Measures DC 4–100V directly — no external power supply needed.
- Reverse Connection Protection: Built-in safeguard prevents damage from accidental reverse wiring.
- Waterproof & Durable: Constructed from ABS and flame-retardant materials for long-lasting use in demanding environments.
- Bright LED Display: Three-digit round LED tube display with a fast ~300ms refresh rate; blue and green options deliver enhanced outdoor visibility.
- Wide Temperature Range: Operates reliably from -30°C to +65°C (-22°F to 149°F).
- Lightweight & Portable: Easy to panel-mount or carry in a toolbox; 20cm lead wires included for quick hookup.
- Multi-Vehicle Compatible: Ideal for cars, motorcycles, buses, boats, ships, RVs, and trailers.
Specifications
| Measuring Range | DC 4–100V (direct measurement) |
| Allowable Tolerance | ±1% |
| Display | Three-digit round LED digital tube |
| Display Colors | Red, Blue, Green |
| Refresh Speed | ~300ms/reading |
| Material | ABS + Flame-retardant plastic |
| Product Size | ~33.8 × 33.8 × 18 mm (1.33 × 1.33 × 0.71 in) |
| Hole Size | 30 mm (1.18 in) |
| Lead Length | ~20 cm (7.87 in) |
| Operating Temperature | -30°C to +65°C |
| Battery Included | No |
| Country of Origin | Made in Mainland China |
What's in the Box
- 1 × Automotive Voltmeter Gauge
Great Pairing Accessories
Looking to keep your electrical tools and accessories organized? Check out these handy store picks:
- 1PC Large Capacity Battery Storage Organizer Box — Keep your batteries neatly stored and ready to go.
- 1PC Mobile Data Cable Storage Box — Tidy up cables and accessories in your workspace or vehicle.
- 1PC Sheath Fold Knife Plier Bag Pouch — Carry your tools securely with a convenient belt pouch.
Learn more: FuelEconomy.gov driving efficiency guidance
Frequently Asked Questions
Q: What voltage range does this digital voltmeter panel gauge measure?
A: This voltmeter directly measures DC voltages from 4V to 100V with a ±1% tolerance, making it suitable for most 12V, 24V, 48V, and higher-voltage DC systems found in cars, motorcycles, boats, and solar setups.
Q: Does this voltmeter require an external power supply to operate?
A: No — the gauge draws its operating power directly from the circuit being measured (DC 4–100V), so no separate power source is needed. Simply connect the included lead wires to the circuit you want to monitor.
Q: Is this voltmeter truly waterproof for outdoor or marine use?
A: Yes. The gauge is built from waterproof ABS and flame-retardant materials, making it suitable for outdoor, marine, and automotive panel installations where it may be exposed to moisture and varying temperatures (-30°C to +65°C).
Q: Which LED display color is best for outdoor use?
A: According to the manufacturer, the blue and green LED display options offer more visible brightness in outdoor and bright-light conditions. The red option is excellent for darker environments or night use.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.