DC 4–100V LED Digital Voltmeter – Round Two-Wire Voltage Meter with Reverse Polarity Protection
Monitor DC voltage quickly and accurately with this DC 4–100V LED Digital Voltmeter. Designed with a compact round panel mount design, this two-wire voltmeter provides clear real-time voltage readings without requiring a separate power supply.
Featuring a bright LED digital display, reverse polarity protection, and a simple two-wire installation, this voltmeter is ideal for cars, motorcycles, battery packs, power supplies, DIY electronics, solar systems, and industrial equipment. Its compact size makes installation easy even in limited spaces while delivering reliable voltage monitoring.
A practical voltage display solution for automotive, electrical, and electronic applications.
Key Features
Wide DC Voltage Measurement Range
• Measures DC 4–100V directly
• No separate power supply required
• Accurate real-time voltage display
• Suitable for multiple DC systems
• Reliable monitoring performance
Perfect for battery and power supply monitoring.
Bright LED Digital Display
• High-visibility LED digits
• Easy-to-read voltage display
• Multiple display colour options
• Fast refresh speed
• Clear viewing day or night
Provides quick voltage readings at a glance.
Two-Wire Easy Installation
• Simple two-wire connection
• Quick panel mounting
• Round compact design
• Easy wiring process
• Suitable for DIY projects
Installs easily without complicated wiring.
Reverse Polarity Protection
• Built-in reverse connection protection
• Helps prevent accidental damage
• Safe installation
• Improved reliability
• Long service life
Protects the meter during installation.
Compact Round Panel Design
• Small round housing
• Fits standard 30 mm panel opening
• Lightweight construction
• Space-saving installation
• Ideal for confined spaces
Perfect for vehicles, electronics, and control panels.
Product Specifications
- Product Type: Digital DC Voltmeter Module
- Measurement Range: DC 4–100V
- Display Type: LED Digital Display
- Display Digits: 3-Digit LED
- Display Colours: Red, Blue, Green, White, Yellow (varies by selection)
- Accuracy: ±1%
- Refresh Rate: Approximately 300 ms
- Wiring: Two-Wire Connection
- Reverse Polarity Protection: Yes
- Installation Type: Panel Mount
- Mounting Hole Diameter: 30 mm
- Overall Diameter: 33.8 mm
- Lead Wire Length: Approximately 20 cm
- Working Current:
- Red Display: <15 mA
- Blue/Green Display: <12 mA
- Operating Temperature: -30°C to 65°C
- Material: Plastic & Electronic Components
- Application: Computer, Automotive, DIY Electronics, Power Supplies
- Customized: Yes
- High-concerned Chemical: None
- Origin: Mainland United Kingdom
- Condition: Brand New
Why Choose This Digital Voltmeter?
- Wide 4–100V DC measuring range
- Bright LED digital display
- Easy two-wire installation
- Reverse polarity protection
- Compact panel-mount design
- Fast voltage refresh rate
- Lightweight and reliable
- Ideal for automotive and DIY electronics
A dependable voltage monitoring tool for everyday electrical applications.
Perfect For
- Car battery monitoring
- Motorcycle electrical systems
- Solar power systems
- DIY electronics
- Power supplies
- Battery packs
- Industrial equipment
- Computer projects
Important Notes
- Designed for DC voltage only.
- Verify correct voltage range before installation.
- Actual display colour may vary slightly due to monitor settings.
- Please allow slight measurement differences due to manual measurement.
