Single Meter Dual Display Volt Meter (Blue display)

• Dual Blue LED Display: Bright, easy-to-read voltage readings for two separate batteries.
• Real-Time Monitoring: Displays live voltage levels for both batteries at once.
• Waterproof and Durable: Designed for rugged environments like UTVs, RVs, boats, and off-road vehicles.
• Reverse Polarity Protection: Prevents damage from incorrect wiring.
• Easy Installation: Simple setup for quick integration into your vehicle or system.

Dual Voltage Meter Wiring Diagram Overview

Here’s your installation diagram for a dual voltage monitoring gauge. It shows how to connect two 12V batteries to a dual-display voltmeter, including labeled wires, terminals, and mounting details.

Can You Use the True Dual Display Voltmeter on Lithium Vehicle Batteries?
Yes, the True® Dual Display Voltmeter works perfectly with lithium batteries in vehicles. It’s built to monitor two independent 12V systems and supports a voltage range of 0–30V, which covers typical lithium battery levels.

How is a voltmeter connected in a circuit?
A voltmeter should always be connected in parallel with the part of the circuit you’re measuring.

Why must a voltmeter have high internal resistance?
To avoid drawing significant current, which could alter the behavior of the circuit being tested.

Can a voltmeter measure current?
Not directly. To measure current, use an ammeter or calculate it using Ohm’s Law.

Can a voltmeter test a battery?
Yes, it can check a battery’s voltage to help assess its charge level.

What happens if a voltmeter is connected in series?
Its high resistance can block current flow and disrupt the circuit.

What does it mean if a voltmeter reads near zero?
This may suggest a short circuit, a disconnection, or no voltage present in the section being measured.

What’s the difference between analog and digital voltmeters?
Analog voltmeters display readings with a needle on a scale, while digital ones show precise numerical values and tend to be more accurate.

Can a voltmeter measure AC and DC voltage?
Yes, most modern voltmeters can measure both. Just be sure to select the appropriate setting for AC or DC.

• Carrier & Coverage We ship all orders via USPS First Class or Priority Mail, with insurance coverage up to $100 included for most packages.
• Processing Time Orders typically ship within 1 to 3 business days and include tracking. If our warehouse anticipates any delay, we’ll notify you promptly before your order is dispatched.
• Same-Day Shipping Goal We aim to ship your order on the same day it’s placed, excluding weekends and federally recognized holidays.
• Orders placed after 2:30 PM Pacific Time will be shipped the next business day.

Weekend & Holiday Notice

Please note: No shipments are processed on weekends or U.S. federal holidays. Shipping Cost Enjoy free shipping on all our products—no hidden fees, no surprises.