Klein Tools MM325 front view highlighting rugged handheld design for on-site testing
Klein Tools MM325 backlit display enabling clear readings in low light
Klein Tools MM325 voltage test up to 600V in real-world scenarios
Klein Tools MM325 continuity and diode test performed on a circuit
Klein Tools MM325 battery test mode being used for quick check
Klein Tools MM325 test leads stored securely in the unit
Klein Tools MM325 kickstand ready for hands-free operation
Klein Tools MM325 magnetic hanger option for mounting on metal surfaces
Klein Tools MM325 rugged construction designed for durable site use

KLEIN TOOLS

Klein Tools MM325 Multimeter | Digital Manual-Ranging 600V AC/DC Voltage Tester

High-performance tools and home improvement made for confident daily results

$49.54

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Why customers choose TaskHolt Tools

Meet the Klein Tools MM325 Multimeter, a manually ranged tester built for professional electricians who value control, clarity, and reliability on every job. This compact meter handles essential electrical checks with a hands-on approach, helping you assess circuits with confidence.

It measures AC/DC voltage up to 600V, DC current up to 10A, and resistance up to 2 MΩ. In addition to voltage and resistance tests, the MM325 performs continuity checks, diode tests, and quick battery assessments, delivering practical diagnostic results without guesswork.

Key features at a glance

  • VERSATILE FUNCTIONALITY: measures AC/DC voltage up to 600V, 10A DC current, and 2 MΩ resistance; includes continuity, diode and battery tests
  • LEAD-ALERT PROTECTION: LEDs illuminate to indicate proper test lead placement, enhancing accuracy and safety during measurements
  • BACKLIT DISPLAY: bright LCD remains legible in dim workspaces for quick readings
  • BATTERY TEST: dedicated mode quickly verifies battery viability on the spot

Everyday practicality on the job

  • CONVENIENT FEATURES: test lead holders on the back, built-in kickstand, and an optional magnetic hanger for hands-free operation
  • DURABLE CONSTRUCTION: designed to withstand a 6.6-foot (2 m) drop, suitable for residential, commercial, and light-industrial environments
  • COMPLETE PACKAGE: includes test leads with CAT III/CAT IV safety caps, instructions, and 2 x AAA batteries

Real-world use and trust

Crafted with six generations of Klein engineering in mind, the MM325 blends field-tested practicality with premium materials. Its thoughtful design supports routine checks—from panel work to on-site diagnostics—delivering dependable results when you need them most.

Keep in mind that performance depends on proper technique and conditions. The MM325 is a capable tool to help you assess electrical conditions and inform next steps during maintenance and troubleshooting, without promising outcomes in every scenario.

FAQ

Q: What can the Klein Tools MM325 measure?

A: It measures AC/DC voltage up to 600V, 10A DC current, resistance up to 2 MΩ, plus continuity, diode tests, and battery status.

Q: Is the MM325 suitable for professional field use?

A: Yes, designed by electricians with a backlit display, lead protection, and durable construction for everyday job-site tasks.

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