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Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging, 400 Amp, NCVT Tester, Hi-Viz LCD Display, TRMS, Continuity Resistance, Temperature and More

Name: Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging, 400 Amp, NCVT Tester, Hi-Viz LCD Display, TRMS, Continuity Resistance, Temperature and More
Brand: Unbranded
SKU: B08DTDCG7T
Price: 80.20 USD
Availability: InStock

By SpecPicks Editorial · Verified 2026-07-23

$80.20

Buy on Amazon — $80.20 Compare to similar tools & maintenance

*Price sourced from Amazon.com. Last updated 2026-07-23. Price and availability subject to change.

Bottom line: The Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging, 400 Amp, NCVT Tester, Hi-Viz LCD Display, TRMS, Continuity Resistance, Temperature and More is a niche pick — read recent reviews before buying in the tools & maintenance category, priced around $80.20. Read recent reviews carefully before committing.

Klein Tools CL390 is an automatically ranging true root mean squared (TRMS) digital clamp meter. It measures AC/DC current and NCVT via the clamp, AC/DC voltage, DC microamps, resistance, continuity, frequency, capacitance, and diodes via test leads, and temperature via a thermocouple probe. It features a high visibility, reverse contrast LCD display that optimizes view ability both in dark or bright ambient lighting. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the…

SpecPicks Verdict

SpecPicks classifies Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging, 400 Amp… as a niche pick — read recent reviews before buying in the tools & maintenance category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.

Common buyer scenarios for tools & maintenance of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key Features

VERSATILE CLAMP METER: Measures AC/DC current and NCVT via clamp; AC/DC voltage, resistance, continuity, frequency/duty cycle, DC microamps, diode test and capacitance via test-leads; temperature via thermocouple
NON-CONTACT VOLTAGE TESTING: Integrated into the clamp jaw for convenient electrical testing
REVERSE-CONTRAST DISPLAY: High-visibility reverse-contrast LCD ensures improved viewability in all lighting conditions
ACCURATE MEASUREMENTS: Auto-ranging and True Root Mean Squared (TRMS) technology provides precise and accurate measurements
CONVENIENT FEATURES: Test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation

Full Specifications

Brand	KLEIN TOOLS
Color	Multi
Model	CL390
Style	Standard Display
Style Name	Standard Display
Unit Count	1.0 Count
Part Number	CL390
Power Source	Battery Powered
Item Type Name	AC/DC Digi Clamp Meter Auto-Ranging 400 Amp
Item Dimensions	8.45 x 3.51 x 1.51 inches
Specification Met	Cat III 600v, Cat IV 600v
Compatible Devices	Devices with test lead inputs
CONVENIENT FEATURES	Test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
Included Components	AC/DC Digital Clamp Meter

Ready to buy?

Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging, 400 Amp, NCVT Tester, Hi-Viz LCD Display, TRMS, Continuity Resistance, Temperature and More is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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*Price sourced from Amazon.com. Last updated 2026-07-23. Price and availability subject to change.