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Two small rectangular digital voltmeters with blue three-digit LED displays and red and black wiring

2PCS DC 5-30V Digital Voltmeter Gauge Blue Display

SKU CH-5KSR-1RS8H

Two-piece DC 5–30 V digital voltmeter with blue 3-digit LED display, 0.1 V accuracy and waterproof two-wire installation for real-time battery monitoring

  • Real-time battery monitoring with 0.1V accuracy
  • Operates from DC 5-30V input range
  • Blue 3-digit LED display for clear readings
  • Simple two-wire installation, red positive and black negative
  • Waterproof design suits cars, motorcycles, boats and RVs

Two-piece DC voltmeter kit

This pack contains two compact digital voltmeters designed for 12 V vehicle electrical systems. Each gauge shows real-time battery voltage on a blue three-digit LED display. The units are aimed at drivers and installers who want a permanent, at-a-glance check on charging health.

Blue LED display and two-wire hookup

The bright blue digits give 0.1 V resolution across a 5–28.6 V display range, making it easy to spot a dropping cell or an over-charging alternator. Only a red positive and a black negative lead are required, so no extra supply wiring or mounting hardware is needed. The sealed, waterproof casing survives engine-bay splashes and marine environments.

Covers 5–30 V systems with 0.1 V steps

The meter operates from 5 V up to 30 V while displaying 5–28.6 V, so it suits cars, motorcycles, RVs, boats and 12 V audio installs. It will not read voltages above 28.6 V or resolve changes smaller than 0.1 V, so users needing higher-range or lab-grade precision should look elsewhere.

How it compares

Measured against everything we stock in Gauges & Tachometers, at today’s prices. Recalculated every night.

Price $21.99
Cheaper than about 76% of the 193 comparable items (median $35.99).

Specifications

No published specifications for this item yet.

Questions about this item

How often will the 0.1V accuracy need recalibration?

The gauge maintains its 0.1V accuracy without scheduled recalibration; only physical damage or wiring faults would require replacement.

What voltage limit stops the display from reading higher?

The display tops out at 28.6V even though the unit tolerates up to 30V input.

Does the blue LED display add noticeable heat or draw during all-day use?

The LED display draws only milliamps at 12V, adding negligible heat and no audible noise during continuous operation.

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