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Red USB digital multimeter, compact high-impact housing, solar powered, digital display, model GUSB-3450

Gardner Bender GUSB-3450 USB Multimeter Digital Tester

SKU CH-FRX5-BGPGN

A pocket-sized USB multimeter measures voltage, current and polarity on chargers and solar ports, with a rugged high-impact housing and a clear digital display

  • Team affiliation1 Piece
  • Key featuresUSB Multimeter tester, UL, Solar Powered, false
  • Overall height1 L x 0.5 W x 2.56 H inches
  • Overall width1 L x 0.5 W x 2.56 H inches
  • Overall length1 L x 0.5 W x 2.56 H inches
  • Product weight0.05 lb (0.02 kg)
  • Measures voltage, current and polarity on USB ports
  • Solar powered operation removes need for external batteries
  • High-impact housing protects against drops and bumps
  • Pocket-size at 2.56 in long and .05 lb weight
  • Simple interface shows real-time volts and amps instantly

USB Diagnostic Tool for Voltage and Current

The Gardner Bender GUSB-3450 is a pocket-sized USB multimeter designed for technicians and hobbyists who need to verify power delivery on the go. It measures voltage, current, and polarity on solar chargers, wall outlets, and vehicle ports. The digital display alternates between volts and amps for real-time monitoring of charging cables and connected devices.

Simple Plug-and-Play Operation with Rugged Housing

Installation requires no drivers or complex menus; simply insert the tester between the power source and the cable. The high-impact housing protects internal components from drops inside toolboxes or on job sites. A common issue is forgetting that the unit draws operating power from the circuit under test, so it cannot measure completely dead ports with zero voltage present.

Handles Standard USB Loads Within Compact Limits

The tester comfortably handles typical USB charging currents for phones, tablets, and small accessories while displaying live draw on the integrated screen. Its 0.05 lb weight and 2.56 inch length add negligible bulk to a kit. It runs out of headroom when diagnosing high-power delivery profiles beyond standard USB specifications or when a benchmark-grade accuracy certificate is required.

How it compares

Measured against everything we stock in Multimeters & Electrical Testers, at today’s prices. Recalculated every night.

Price $22.99
Cheaper than about 70% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameGardner Bender, GARDNER BENDER
Product typeMultimeters, Tach & Dwell Meters
Size & build
Overall height1 L x 0.5 W x 2.56 H inches
Overall width1 L x 0.5 W x 2.56 H inches
Overall length1 L x 0.5 W x 2.56 H inches
Product weight0.05 lb (0.02 kg)
More details
Team affiliation1 Piece

Questions about this item

How do I confirm the GUSB-3450 is measuring correctly after plugging it in?

The digital screen alternates between volts and amps in real time; verify the readings match the expected output of your USB charger or solar panel.

What comes with the GUSB-3450 and what must I provide?

The tester itself is included; you supply the USB charging cable, solar charger, wall port or vehicle charger you want to diagnose.

Which version of the GUSB-3450 should I choose for voltage, current and polarity testing?

The single model GUSB-3450 covers all three functions — voltage, current and polarity — in one pocket-sized unit.

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