HandyGauge Precision Tool Lab
Richmeters

Richmeters RM405N digital multimeter

★★★★☆ 4.3/5 (4 customer reviews)
Overall Score4.3/5.0
Estimated street price $46.39 $60.99 Est. save $15 Estimated retail price; actual price may vary by seller and region.
Expert Verdict

The Richmeters RM405N is a dependable digital multimeter that delivers accurate measurements and essential features at an affordable price point. It is ideal for electricians, technicians, and DIY enthusiasts who need a straightforward tool for everyday electrical testing. While it lacks some advanced functions, its ease of use and solid performance make it a worthy addition to any toolkit.

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Key Features & Specs

  • Measures AC/DC voltage, current, and resistance
  • Continuity buzzer for quick circuit testing
  • Diode test function
  • Large backlit LCD display for easy visibility
  • Overload protection on all ranges
  • Compact and ergonomic design
  • Rotary switch for intuitive operation
✓ Pros
  • Accurate readings with stable measurements
  • Clear and bright backlit display
  • Good build quality for the price
  • Simple and user-friendly interface
  • Overload protection enhances safety
  • Lightweight and portable
✗ Cons
  • No temperature measurement feature
  • Limited advanced functions compared to high-end models
  • Leads and probes could be more durable

HandyGauge Lab Score

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

Accuracy
82
Build / Durability
87
Usability
87
Value for Money
89
4.3
Overall · 86/100

Test-Bench Snapshot

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

Full Review

The Richmeters RM405N digital multimeter is a reliable and versatile measuring tool designed for both professionals and hobbyists. It offers precise measurements with a clear LCD display, making it easy to read voltage, current, resistance, and continuity. This model is well-suited for electrical troubleshooting, circuit testing, and general electronic diagnostics.

Equipped with multiple measurement functions including AC/DC voltage, resistance, and diode testing, the RM405N provides accurate readings with good stability. Its compact design and rotary switch enhance usability, while built-in safety features such as overload protection ensure durability during daily use.

The RM405N stands out for its affordability without compromising essential features, making it a solid choice for those needing a dependable multimeter for typical electrical tasks. While it lacks some advanced capabilities found in premium models, it sufficiently covers the core functions expected from a mid-range digital multimeter.

Customer Reviews

James R. March 2025
★★★★★
Great value for the price
I've used the RM405N for various home electrical projects and it performs well. The readings are consistent and the display is easy to read even in low light. Definitely a great tool for the cost.
Samantha K. January 2025
★★★★☆
Reliable and simple multimeter
This multimeter covers all the basics I need for my electronics hobby. It’s simple to operate and the continuity buzzer is very handy. Wish the probes were a bit sturdier, though.
David M. February 2025
★★★★☆
Solid performance, minor drawbacks
The RM405N is a solid performer with a clear display and accurate measurements. It lacks some advanced features, but for general use it's reliable and safe.
Emily T. December 2024
★★★☆☆
Good basic multimeter
This is a good entry-level multimeter. It does what it should, but I was hoping for temperature measurement and more durable test leads.