Klein Tools CL390 Digital Clamp Meter – Product Description

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Klein Tools CL390 Digital Clamp Meter – Product Description

Klein Tools CL390 Digital Clamp Meter


The Klein Tools CL390 is a state-of-the-art digital clamp meter designed for professionals in various industries. With its advanced features and durable construction, it is the perfect tool for accurate measurements in electrical and HVAC applications.

Main Features

  • Automatically ranging True Root Mean Squared (TRMS) measurement technology for accuracy
  • Measures AC/DC current and NCVT via clamp and AC/DC voltage, resistance, frequency, DC microamps, capacitance, duty cycle, diode test, and continuity via test-leads
  • Measures temperature with a K-Type thermocouple probe
  • High-visibility reverse contrast LCD display for improved viewability in all ambient lighting conditions
  • Test lead holder on the side of the clamp for convenience
  • Optional magnetic hanger for hands-free operation
  • Non-contact voltage tester integrated into the clamp jaw
  • Max/Min, Rel/Zero, and Data Hold capability

About Klein Tools

For over 160 years, Klein Tools has been a trusted name in the industry, manufacturing premium-quality, professional-grade hand tools. With a commitment to performance, durability, and precision, Klein Tools continues to deliver tools that meet the demands of professionals worldwide.

As a family-owned and family-run American company, Klein Tools takes pride in its heritage and ensures that every tool is made with the highest quality materials and superior workmanship. By keeping manufacturing close to home, Klein Tools maintains its reputation for excellence.


The Klein Tools CL390 Digital Clamp Meter is a reliable and versatile tool that professionals can rely on. With its innovative features, such as the high-visibility reverse contrast LCD display and automatically ranging TRMS measurement technology, it provides accurate readings in any lighting condition.

Whether you’re an electrician, HVAC technician, or any professional in need of precise measurements, the Klein Tools CL390 is the perfect companion for your work. Trust in Klein Tools’ expertise and choose a tool that will stand up to the demands of your job.