HandyGauge Precision Tool Lab
Uni-T

Uni-T UT204A clamp meter

★★★★☆ 4.3/5 (2 customer reviews)
Overall Score4.3/5.0
Estimated street price $62.49 $76.99 Est. save $14 Estimated retail price; actual price may vary by seller and region.
Expert Verdict

The Uni-T UT204A clamp meter is an excellent choice for electricians and DIY enthusiasts seeking a portable, easy-to-use tool for everyday electrical measurements. While it has some limitations in jaw size and advanced features, its accuracy and versatility make it a solid value option for most standard applications.

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Key Features & Specs

  • 30mm jaw opening for AC current measurement up to 400A
  • Measures AC/DC voltage, resistance, continuity, and diode testing
  • Backlit LCD display for visibility in low-light environments
  • Data hold function to freeze readings on display
  • Auto power-off to conserve battery life
  • Compact and lightweight design for easy handling
✓ Pros
  • Accurate AC current measurement with clamp design
  • User-friendly interface with backlit display
  • Multi-functional measuring capabilities
  • Portable and lightweight, ideal for fieldwork
  • Battery-saving auto power-off feature
  • Good value for the price
✗ Cons
  • Clamp jaw size limits use on larger cables
  • No True RMS measurement for more complex signals
  • Basic build quality not suited for heavy industrial use
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HandyGauge Lab Score

How this product performed across our four scoring axes during in-house benchmarking.

Accuracy
85
Build / Durability
82
Usability
87
Value for Money
86
4.3
Overall · 86/100

Test-Bench Snapshot

A quick visual of how this clamp meter compares to the category average across four lab tests.

Full Review

The Uni-T UT204A clamp meter is a versatile and reliable measuring tool designed for electricians and technicians who require accurate current and voltage measurements in a compact device. Featuring a robust clamp jaw with a 30mm diameter, it allows easy measurement of AC current up to 400A without the need to disconnect wiring. Its compact design and lightweight body make it comfortable for prolonged use in tight or hard-to-reach spaces.

Equipped with a backlit LCD screen, the UT204A ensures clear readability in low-light conditions, enhancing usability on job sites. It supports multiple measurement modes including AC/DC voltage, resistance, continuity, and diode testing, making it a multifunctional instrument for various electrical diagnostics. The meter also includes a data hold function, allowing users to freeze readings for convenience during testing.

While it offers good value and performance for professionals and hobbyists alike, the device operates on two AAA batteries and features an auto power-off function to conserve energy. Its build quality is solid, though the clamp jaw size limits it to smaller conductors compared to larger clamp meters. Overall, the Uni-T UT204A is a practical and affordable tool that balances functionality with portability for everyday electrical measurement tasks.

Customer Reviews

David R. March 2025
★★★★★
Reliable and Easy to Use
The UT204A has been my go-to clamp meter for several months now. It’s accurate and the backlight really helps when working in dimly lit areas. The compact size is perfect for my electrical panel troubleshooting.
Sara M. January 2025
★★★★☆
Good Value for the Price
This clamp meter covers all basic functions I need and is very portable. The only downside is the clamp size which doesn’t fit larger wires, but for most household wiring it’s perfect.