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โ๏ธ Master your measurements with Kleinโs powerhouse multimeterโbecause precision is the new professional.
The Klein Tools MM420 is a robust, auto-ranging TRMS digital multimeter designed for professionals who demand accuracy and durability. It measures up to 600V AC/DC voltage, 10A AC/DC current, and 50 Mฮฉ resistance, plus temperature and capacitance. Featuring lead-alert safety LEDs, a backlit display, and a rugged build that withstands 2-meter drops, itโs engineered for reliable performance across residential, HVAC, and light industrial environments.












| ASIN | B0B57PFFYX |
| Best Sellers Rank | 129,421 in DIY & Tools ( See Top 100 in DIY & Tools ) 281 in Multi Testers |
| Brand | KLEIN TOOLS |
| Colour | Orange/Black |
| Customer Reviews | 4.7 out of 5 stars 866 Reviews |
| Global Trade Identification Number | 00092644693748 |
| Included Components | Digital Multimeter, TRMS Auto-Ranging, 600V, Temp |
| Item Dimensions | 23.7 x 12.9 x 9.7 centimetres |
| Item Type Name | Digital Multimeter, TRMS Auto-Ranging, 600V, Temp |
| Item Weight | 0.11 Pounds |
| Item dimensions L x W x H | 23.7 x 12.9 x 9.7 centimetres |
| Item weight | 0.11 Pounds |
| Manufacturer | Klein Tools |
| Manufacturer Part Number | MM420 |
| Measurement Type | Multimeter |
| Minimum Operating Voltage | 9 Volts |
| Model Number | MM420 |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Specification Met | Cat Iii 600v Safety Rating |
| Style | w/Lead Alert |
| Style Name | w/Lead Alert |
| UPC | 092644693748 |
| Unit Count | 1.0 count |
| Upper Temperature Rating | 1000 Degrees Celsius |
V**1
Does not come with carry case
Multimeter is good and so are its functions. However it does not come with a carry case as stated. False advertising
H**V
Inadequate
Bought for my husband. But not impressed. He found inadequate.
M**E
Review
Does exactly what I bought it for
D**J
Klein Tools MM420 multimetr cyfrowy
Rewelacyjny multimetr,polecam rรณwnieลผ dla poczฤ tkujฤ cych.
C**N
Buena Calidad
Buen producto y fรกcil de usar.
G**S
Good value!
I've been a fan of Klein Tools for years, so considering a Klein multimeter wasn't difficult at all. I've used mostly Fluke multimeters in my 40+ year carreer as a technician. They are considered the best of the best. With that accuracy, repeatability, and quality, you pay dearly! So I was looking for a second lower-cost meter. I was also looking for a reverse backlit display--white numerals on a black background. I'd looked at Milwaukee, but they do not include a diode check function. I chose the MM450 for it's features and price point. While I have not compared accuracy to other meters, published specs are similar to other more expensive meters. There is one minor issue in my review, and that is the white-on-black display needs to be viewed pretty much head-on for best quality. Depending on the tilt angle, there are positions where the display is very faded, almost to disappear. That might be an issue if you measuring in tight quarters or not able to look straight on otherwise. It comes with test and temperature probes, and fabric case. An optional rare-earth magnetic hanging strap is available. Besides voltage and current, it also measures resistance, capacitance and frequency, along with a peak hold function, making it an ideal meter for most service techs. One other minor detail...when in Auto scale mode, it can take up to 5 seconds for the reading to finally resolve. If you are troubleshooting something point to point and in a hurry, this may be an annoyance. However, if you turn off the Auto-scale mode, the readings display quite a bit faster. Given the display issue (and that might not be a problem for everyone) I'd give it a 4.5, if that were possible. But it's certainly better than a 4, so a 5 it is!
C**N
Parfait
Parfait
R**O
Lo recomiendo
Excelente todo bien
Trustpilot
1 week ago
2 days ago