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Klein Tools CL390 Digital Auto Ranging Clamp Meter (400A AC/DC) EXPIRED

$75
$89.97
+ Free Shipping
+37 Deal Score
26,445 Views
Amazon has Klein Tools CL390 Digital Auto Ranging Clamp Meter (400A AC/DC) on sale for $74.97. Shipping is free.

Thanks to Community Member java007 for posting this deal.

About this Product:
  • Test lead holder on side of clamp and optional magnetic hanger for meter (Cat. Nos. 69445 or 69417) for hands free operation
  • Non-contact voltage tester integrated into the clamp jaw
  • High-visibility reverse contrast LCD display for improved view ability in all ambient lighting conditions
  • 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, and temperature with thermocouple
  • Measures temperature with a K-Type thermocouple probe
  • Max/Min, Rel/Zero and Data Hold capability
  • Auto-power off after 10 minutes to conserve battery life
  • Includes a carrying case, test leads with CAT III/CAT IV safety caps, thermocouple, instructions, and 3 x AAA batteries
  • Low battery indicator and easily accessible battery compartment
  • Built to withstand a 6.6-Foot (2 m) drop
  • CAT III 600V, Class 2, Double insulation safety rating

Editor's Notes & Price Research

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  • About this Deal:
    • Rated 4.7 out of 5 stars from over 620 reviews.
    • At the time of this posting, Our research indicates that this is $6.49 lower (8% savings) than the next best available options with prices starting from $81.49. -SaltyOne
  • About this Store:
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Original Post

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Edited July 1, 2022 at 07:18 PM by
https://smile.amazon.com/dp/B08DTDCG7T

From the Amazon listing:

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.

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Not the lowest price in history (per 3x camel), but near recent lows. Reviews are mostly positive. Viewing in sunlight seems to be a weak point, so if working on an outdoor A/C unit in the sun, you may want another option.

Seems like at least a decent deal if you need the features without jumping way up in price for fluke, etc.
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$75
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unumshopper asked this question on 06-30-2022 at 11:06 PM

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Featured Comments

I wont trust my safety to some no name Chinese crap meter. Just my 2 cents.
I recently needed a capacitance meter to check my HVAC run capacitor. That's the main limitation I had with my DMM
I used mine (older model) recently to measure my furnace startup current so I could size a generator.

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#3
With the added accessories makes it a pretty good deal the unit by itself is regularly 79.00 at Ace hardware
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#4
any uses for this for an average homeowner?
have a DMM for checking voltage and that was used quite often when wiring smart switches and outlets, and troubleshooting some circuitry.
not sure if measuring amps is something I'd need (haven't had to yet).
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#5
Quote from blahblahyoutoo :
any uses for this for an average homeowner?
have a DMM for checking voltage and that was used quite often when wiring smart switches and outlets, and troubleshooting some circuitry.
not sure if measuring amps is something I'd need (haven't had to yet).
I used mine (older model) recently to measure my furnace startup current so I could size a generator.
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#6
Quote from blahblahyoutoo :
any uses for this for an average homeowner?
have a DMM for checking voltage and that was used quite often when wiring smart switches and outlets, and troubleshooting some circuitry.
not sure if measuring amps is something I'd need (haven't had to yet).
I recently needed a capacitance meter to check my HVAC run capacitor. That's the main limitation I had with my DMM
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#7
Quote from ClintiePoo :
I used mine (older model) recently to measure my furnace startup current so I could size a generator.
Thanks. seems like a edge case and not a typical/often event.
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#8
Quote from blahblahyoutoo :
Thanks. seems like a edge case and not a typical/often event.
Agree - checking for the generator is the only time I've used the clamp/current feature of mine. Others may have better use cases.
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#9
Quote from vha23 :
I recently needed a capacitance meter to check my HVAC run capacitor. That's the main limitation I had with my DMM
ahh, hitting closer to home. I recently replaced my HVAC contactor based on visual appearance and it fixed the issue. bought a capacitor as a standby just in case.
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#10
Some appliance diagnostics/repairs (motor draw, igniter function, etc.) need the AC current clamp. Solar troubleshooting could need the DC current clamp. The DC clamp functionality is usually a more expensive feature of these meters.
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#11
Has anyone used this for automotive diagnostics like searching for parasitic battery drain? In one of the reviews the guy stated there's a "dead zone" up to 300 milliamps
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#12
Quote from drummr8 :
Has anyone used this for automotive diagnostics like searching for parasitic battery drain? In one of the reviews the guy stated there's a "dead zone" up to 300 milliamps
Same question.. Just looking at it though that dead zone makes sense, the clamp is huge compared to most of the automotive wires, it seems unlikely it could accurately measure such small magnetic fields.

But if anyone knows for sure, I have the same question
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#13
I managed to use Discover promo - the "make Discover default method of payment, get $20 off" (search Doctor of Credit, not sure links are allowed here) to make this a better deals. Took $20 off no issues since it was sold by Amazon.
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#14
Quote from drummr8 :
Has anyone used this for automotive diagnostics like searching for parasitic battery drain? In one of the reviews the guy stated there's a "dead zone" up to 300 milliamps
You might want something like this: https://www.amazon.com/gp/product...UTF8&psc=1

These still have low current limitations because it relies on the strength of the magnetic field outside of the wire.
For low amperage parasitic draws in a car, I suggest looking at fuse voltage drop testing.
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