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frontpagephoinix | Staff posted Oct 18, 2025 07:11 AM
frontpagephoinix | Staff posted Oct 18, 2025 07:11 AM

Klein Tools Digital Multimeter Electrical Tester Set

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$50

$60

16% off
Amazon
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Deal Details
Amazon has Klein Tools Digital Multimeter Electrical Tester Set (MM320KIT) on sale for $49.49. Shipping is free.

Home Depot has Klein Tools Digital Multimeter Electrical Tester Set (MM320KIT) on sale for $49.49. Shipping is free or select free ship-to-store pickup where available.

Thanks to Deal Hunter phoinix for finding this deal.
  • Note: Availability for pickup may vary by location.
Includes:
  • MM320 Digital Multi-meter (Measures up to 600-Volt AC/DC voltage, 10 A DC current and 2MΩ resistance)
  • NCVT-3P Non-Contact Voltage Tester with Flashlight
  • ET45 Voltage Tester
  • RT210 GFCI Receptacle Tester
  • A padded storage pouch and all required batteries

Editor's Notes

Written by RevOne | Staff
  • About this deal:
    • Please see original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
  • About this product:
    • 2 year warranty
    • 4.8 out of 5 stars rating at Amazon based on over 247 customer reviews.
  • About this store:

Original Post

Written by phoinix | Staff
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Amazon has Klein Tools Digital Multimeter Electrical Tester Set (MM320KIT) on sale for $49.49. Shipping is free.

Home Depot has Klein Tools Digital Multimeter Electrical Tester Set (MM320KIT) on sale for $49.49. Shipping is free or select free ship-to-store pickup where available.

Thanks to Deal Hunter phoinix for finding this deal.
  • Note: Availability for pickup may vary by location.
Includes:
  • MM320 Digital Multi-meter (Measures up to 600-Volt AC/DC voltage, 10 A DC current and 2MΩ resistance)
  • NCVT-3P Non-Contact Voltage Tester with Flashlight
  • ET45 Voltage Tester
  • RT210 GFCI Receptacle Tester
  • A padded storage pouch and all required batteries

Editor's Notes

Written by RevOne | Staff
  • About this deal:
    • Please see original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
  • About this product:
    • 2 year warranty
    • 4.8 out of 5 stars rating at Amazon based on over 247 customer reviews.
  • About this store:

Original Post

Written by phoinix | Staff

Community Voting

Deal Score
+30
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Price Intelligence

Model: Klein Tools MM320KIT Digital Multimeter Electrical Test Kit, Non-Contact Voltage Tester, Receptacle Tester, Carrying Case and Batteries

Deal History 

Sale Price
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Current Prices

Sort: Lowest to Highest | Last Updated 10/21/2025, 08:41 PM
Sold By Sale Price
Amazon$49.49
The Home Depot$49.49

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Top Comments

yivek
127 Posts
38 Reputation
For any handy DIY home owners in a warmer climates, I didn't buy this one as a gift for my brother because it doesn't do capacitor testing.

AC units can have capacitors that go bad and it's a fairly cheap part to buy and replace yourself. Versus an AC repair person that's typically over $100 for the visit and then whenever they want to charge you for the capacitor on your AC, that isn't working.
I have a Klein volt meter, a step above this that does capacitor testing and I was able to save myself a AC repair person visit and put a new capacitor in for $35.

My AC wasn't kicking on the compressor and it was due to an old capacitor. I was able to fix it with a voltmeter, a YouTube video and a screw driver.
Benito_Camelo
47 Posts
202 Reputation
HD has the same price, not a sale MM320KIT

Cahlheim
204 Posts
102 Reputation
I keep a spare cap on hand just for this situation.

13 Comments

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Oct 18, 2025 02:05 PM
47 Posts
Joined Mar 2020
Benito_CameloOct 18, 2025 02:05 PM
47 Posts
HD has the same price, not a sale MM320KIT

Oct 18, 2025 02:38 PM
127 Posts
Joined Jan 2016
yivekOct 18, 2025 02:38 PM
127 Posts

Our community has rated this post as helpful. If you agree, why not thank yivek

For any handy DIY home owners in a warmer climates, I didn't buy this one as a gift for my brother because it doesn't do capacitor testing.

AC units can have capacitors that go bad and it's a fairly cheap part to buy and replace yourself. Versus an AC repair person that's typically over $100 for the visit and then whenever they want to charge you for the capacitor on your AC, that isn't working.
I have a Klein volt meter, a step above this that does capacitor testing and I was able to save myself a AC repair person visit and put a new capacitor in for $35.

My AC wasn't kicking on the compressor and it was due to an old capacitor. I was able to fix it with a voltmeter, a YouTube video and a screw driver.
1
Pro
Oct 18, 2025 04:27 PM
204 Posts
Joined Jun 2007
Cahlheim
Pro
Oct 18, 2025 04:27 PM
204 Posts

Our community has rated this post as helpful. If you agree, why not thank Cahlheim

Quote from yivek :
For any handy DIY home owners in a warmer climates, I didn't buy this one as a gift for my brother because it doesn't do capacitor testing.

AC units can have capacitors that go bad and it's a fairly cheap part to buy and replace yourself. Versus an AC repair person that's typically over $100 for the visit and then whenever they want to charge you for the capacitor on your AC, that isn't working.
I have a Klein volt meter, a step above this that does capacitor testing and I was able to save myself a AC repair person visit and put a new capacitor in for $35.

My AC wasn't kicking on the compressor and it was due to an old capacitor. I was able to fix it with a voltmeter, a YouTube video and a screw driver.
I keep a spare cap on hand just for this situation.
1
Oct 18, 2025 04:46 PM
49 Posts
Joined Jul 2017
1ronhallOct 18, 2025 04:46 PM
49 Posts
Quote from Cahlheim :
I keep a spare cap on hand just for this situation.
As do I!
2
Oct 19, 2025 12:50 AM
117 Posts
Joined Nov 2009
Somnus1Oct 19, 2025 12:50 AM
117 Posts
Quote from Cahlheim :
I keep a spare cap on hand just for this situation.
Me too! I see that bulge in the top and replace the cap. So inexpensive.
2
Oct 20, 2025 04:34 PM
1 Posts
Joined Sep 2024
NeatApparel1975Oct 20, 2025 04:34 PM
1 Posts
Quote from yivek :
For any handy DIY home owners in a warmer climates, I didn't buy this one as a gift for my brother because it doesn't do capacitor testing.

AC units can have capacitors that go bad and it's a fairly cheap part to buy and replace yourself. Versus an AC repair person that's typically over $100 for the visit and then whenever they want to charge you for the capacitor on your AC, that isn't working.
I have a Klein volt meter, a step above this that does capacitor testing and I was able to save myself a AC repair person visit and put a new capacitor in for $35.

My AC wasn't kicking on the compressor and it was due to an old capacitor. I was able to fix it with a voltmeter, a YouTube video and a screw driver.
Can you provide the model number or Amazon link that includes capacitor testing? Thank you.
Pro
Oct 20, 2025 05:03 PM
1,449 Posts
Joined Jun 2006
s4rah
Pro
Oct 20, 2025 05:03 PM
1,449 Posts
How is this a "Hot Deal"? It's almost aways this price.

Sign up for a Slickdeals account to remove this ad.

Yesterday 02:46 PM
881 Posts
Joined Nov 2010
everica1Yesterday 02:46 PM
881 Posts
Quote from NeatApparel1975 :
Can you provide the model number or Amazon link that includes capacitor testing? Thank you.
I bought the MM420 earlier this year from Amazon specifically because it featured the capacitor testing since my old trusty Radio Shack DMM didn't have it.

Definitely pay the $5 more for the MM420 to get the added capacitance testing.
1
Yesterday 02:49 PM
881 Posts
Joined Nov 2010
everica1Yesterday 02:49 PM
881 Posts
Quote from s4rah :
How is this a "Hot Deal"? It's almost aways this price.
I agree.
This product hasn't been anywhere near the $60 MSRP since 2021. This is the everyday price. Must be a slow deal day on SD so they are just pushing anything now.
Yesterday 02:59 PM
3,344 Posts
Joined Jan 2011
WandYesterday 02:59 PM
3,344 Posts
It's been this price for good 3 months.
Yesterday 03:13 PM
359 Posts
Joined Dec 2018
shoka_conYesterday 03:13 PM
359 Posts
Quote from Benito_Camelo :
HD has the same price, not a sale MM320KIT
This is also the normal price at Amazon, and has been for a long time.
Yesterday 03:26 PM
166 Posts
Joined Mar 2017
BellmarYesterday 03:26 PM
166 Posts
Quote from Cahlheim :
I keep a spare cap on hand just for this situation.
Proactively replacing the blower fan cap, as well the codenser fan&compresser cap and relay are cheap ways to save good money on HVAC services.

That and cleaning your coils and lubing your fan bearings.

Even better, learn to press in new bearings. New fans can be 150+ tax and shipping.
Yesterday 06:04 PM
14,982 Posts
Joined Jan 2010
Ride_The_SkyYesterday 06:04 PM
14,982 Posts
Pay a bit more and get MM420

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