Mini 2-Wire Digital Voltmeter DC 5V–120V LED Voltage Display

Mini 2-Wire Digital Voltmeter – Compact DC Voltage Display (5V–120V)

Monitor your DC voltage at a glance with this Mini 2-Wire Digital Voltmeter. Covering a wide measurement range of 5V to 120V DC, this compact panel meter is perfect for electric vehicles, battery banks, DIY electronics, solar setups, automotive projects, and workshop benches. Its ultra-slim design mounts effortlessly into dashboards, enclosures, or project boxes.

Key Features

• Wide Voltage Range: Accurately reads DC voltages from 5V up to 120V — ideal for a broad range of applications
• 2-Wire Connection: Draws power directly from the measured circuit — no extra power supply needed, simplifying your wiring
• Bright LED Display: Available in Red, Green, or Blue LED for clear, easy reading even in low-light environments
• Low Start Working Voltage: Begins displaying accurately at just ~4V, making it reliable across low-voltage systems
• Reverse Connection Protection: Built-in safeguard protects the meter and your circuit if leads are accidentally swapped
• Compact & Panel-Mount Ready: Small form factor fits neatly into custom enclosures, instrument panels, and project housings
• Plug-and-Play: No complex setup required — install and start reading voltage right away

Specifications

• Measurement Range: DC 5V – 120V
• Connection Type: 2-Wire
• Display Colors Available: Red / Green / Blue LED
• Minimum Working Voltage: ~4V
• Reverse Connection Protection: Yes
• Mounting: Panel-mount cutout

Ideal For

• Electric vehicles, e-bikes, and scooters
• Automotive and motorcycle battery monitoring
• Solar panels and battery storage systems
• DIY electronics and maker projects
• Power supply units and bench testing

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Frequently Asked Questions

Q: What voltage range does this mini digital voltmeter measure?

A: This 2-wire mini digital voltmeter measures DC voltages from 5V to 120V. It begins operating accurately at approximately 4V, making it suitable for low-voltage battery systems, electric vehicles, automotive setups, and a wide range of DIY electronic projects.

Q: Does the 2-wire voltmeter need a separate power supply?

A: No — the 2-wire design means the voltmeter draws its operating power directly from the circuit being measured. This eliminates the need for a separate power wire and makes installation clean and straightforward.

Q: What display color options are available?

A: This mini digital voltmeter is available in three LED display colors: Red, Green, and Blue. Choose the color that best matches your panel design or personal preference for visibility in your specific environment.

Q: Is reverse connection protection included?

A: Yes. This voltmeter is equipped with built-in reverse connection protection, which safeguards the device and your circuit in the event the leads are accidentally connected with reversed polarity — a great safety feature for both beginners and experienced builders.

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.