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Klein Tools CL445 HVAC Clamp Meter, Auto-Ranging TRMS, NCVT, Measures Voltage, Current, Temperature, Micro Amps, InRush and More

Based on 284 reviews
Condition: New
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$109.98
Holiday Deal · 21% off was $139.99

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Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Nov 14
Order within 14 hours and 52 minutes

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At a glance

Condition
New
Model
CL445
Dimensions
9.24 x 3.76 x 1.59 in
Weight
12.64 oz
Color
Black, Orange
Power Source
Battery Powered
Style
1-1/2-in Jaw
In the box
HVAC Clamp Meter
Warranty
Please refer to attached warranty document.

Features 7

  • VERSITILE HVAC CLAMP METER: Measures AC current, inrush 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
  • DUAL VOLTAGE + CURRENT DISPLAY: Backlit LCD shows voltage and current simultaneously for easy readings in any lighting condition
  • ACCURATE MEASUREMENTS: Auto-ranging and True Root Mean Squared (TRMS) technology provides precise and accurate measurements

Description

Klein Tools CL445 Clamp Meter is an advanced HVAC clamp meter with automatically ranging true root mean square (TRMS) for maximum accuracy. The meter measures AC current, inrush current, AC/DC voltage, DC microamps, resistance, continuity, frequency, capacitance, temperature, diodes, and more. This Digital Clamp Meter can simultaneously measure current and voltage, has a built-in worklight and comes with right-angle input test leads, push-on alligator clips, K-Type thermocouple, storage pouch, instructional manual, and 3 x AAA batteries. 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 job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857.

Specs 20

Brand KLEIN TOOLS
Power Source Battery Powered
Style 1-1/2-Inch Jaw
Color Black, Orange
Item Weight 12.64 ounces
Upper Temperature Rating 1000 °C
Measurement Type Voltmeter
Maximum Operating Voltage 750 volts

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Nov 14

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


Great meter for the
Size: 1 1/2-Inch Jaw
Electrical engineer .. this has all the required bells and whistles!! I wish it had a larger storage pouch to stash my breakout plug though! Worth the price!
Reviewed in the United States on June 15, 2026 by Bo-jangles

Great little clamp meter
Size: 1 1/2-Inch Jaw
As a pro I was a Fluke guy, but as a DIYer, I didn’t need to go that big when my 15yo meter bit the dust. Klein had great reviews so I gave it a shot when I needed something to diagnose my AC unit. Seems well built, has all the features I need and then some. Hard to beat for the price an comes with a nice storage pouch and thorough instructions. ... show more
Reviewed in the United States on March 1, 2026 by N. Plumley

Great for home use
Size: 1 1/2-Inch Jaw
So far, this is a great tool. Does what I need it to do for a good price. I use mainly for household work, however.
Reviewed in the United States on September 22, 2025 by BT

It’s worth it
Size: 1 1/2-Inch Jaw
Works good but feels cheap
Reviewed in the United States on March 15, 2025 by Rolly

Its very easy and very simple
Size: 1 1/2-Inch Jaw
Nice stuff eazy to read
Reviewed in the United States on June 9, 2026 by Owen

Good tool to have.
Size: 1 1/2-Inch Jaw
This device works very well for checking electric and troubleshooting things. I have used it on a couple of jobs, including checking capacitors and checking for shorts. I’ve used it on the car as well and doing other electrical work sometimes very happy with it so far no problems would definitely recommend buying ... show more
Reviewed in the United States on December 5, 2024 by Michael Laporta

More than any regular homeowner will ever need
Size: 1 1/2-Inch Jaw
Purchase this because I recently installed a Generac generator and I wanted to be able to take readings on my air conditioning system and my generator as well as other appliances from time to time. I also do some minor electrical work around the house and often need to do continuity tests and other AC and DC testing. I will also be attending the Generac University generator technicians course to run a side hustle business maintaining generators so this is perfect for me but it is definitely more than anyone who is just a standard homeowner will ever need. If you want a high quality tool still then I highly recommend this because you should never need another tool as long as it keeps working. Really nice padded case comes with it also which is different from every low end $35 and under meter I have ever purchased. If higher end accuracy in your readings is something that's extremely important then it's worth the money. My Harbor Freight Tools higher end version of their product does not read the same as this. The HFT gauge reads about two amps higher when clamped to the same wire. ... show more
Reviewed in the United States on December 19, 2024 by REW

Great meter
Size: 1 1/2-Inch Jaw
Solid middle-ground meter, no complaints
Reviewed in the United States on February 23, 2026 by Caleb
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