Klein / Measuring and Testing / Electrical Testers / MM420
Klein MM420 Multimeter
Price tracked since Jul 2022
$64.37
- At its usual price
Usually $64.47 to $64.98 over the past 90 days
Fair
Right at its usual price of $64.98. It was cheaper than this on 10 of the past 90 days. The 90-day low was $58.82 on Sep 28.
Price checked Oct 4 2026, 3:37 PM ET. Prices change. Confirm the live price on Amazon before buying. ToolBuck earns a commission on qualifying purchases.
View on Amazon Specs
| Brand | Klein |
|---|---|
| Model | MM420 |
| Type | Multimeter |
| Size and details | Auto-ranging, TRMS, 600V |
| Weight | 0.9 lb |
| In the box | Digital Multimeter, Auto-Ranging, 600V |
Price History
The gray band is the usual range: where the price sat for the middle half of the 90 days shown.
Klein MM420 price over 90 days. Current price $64.37. Usual range $64.47 to $64.98. Low $58.82, high $64.98.
The gray band is the usual range: where the price sat for the middle half of the 1 year shown.
Klein MM420 price over 1 year. Current price $64.37. Usual range $64.37 to $64.98. Low $52.99, high $65.79.
The gray band is the usual range: where the price sat for the middle half of the tracked history shown. The all-time line shows the lowest price of each week.
Klein MM420 price over all time. Current price $64.37. Usual range $49.99 to $59.97. Low $45.68, high $65.79.
Line: Amazon price. Red dot: current price. Gaps mean no offer at that time.
- Current $64.37 Checked Oct 4 2026, 3:37 PM ET
- Usual range $64.47 to $64.98 Over the past 90 days. At its usual price
- Lowest ever $45.68 Jun 23 2024
- 90-day high $64.98
- Drops in 90 days 30
More From Klein
See all: More From Klein-
Klein JTH6T40 T-handle Torx key, T40, 6 in.$10.99 Buy, 25% below -
Klein 80027 Screwdriver set, 11-in-1 and 6-in-1 stubby, 2-piece$22.69 Fair, 9% below -
Klein 5416TFR Flame-resistant canvas tool bag, 3 pockets$24.98 Fair, 7% below -
Klein 32516HD 16-in-1 impact-rated hybrid screwdriver$27.98 Fair, 3% below -
Klein 5109SLR Canvas tool bucket, 150 lb. load$56.63 Fair, 2% below
Prices checked between Oct 4 2026, 3:02 PM ET and Oct 4 2026, 4:02 PM ET.
Popular in Electrical Testers
See all: Popular in Electrical Testers-
Klein 69149P Electrical test kit, 3-piece$44.98 Fair, 12% above -
Klein 80196 Digital multimeter kit, 600V$47.21 Fair, 2% above -
Klein MM325 Digital multimeter, manual-ranging, 600V$29.98 Fair, at usual -
Klein RT250KIT Voltage tester and GFCI outlet tester kit$39.97 Fair, at usual -
Klein 80041 Outlet repair tool kit, 3-piece$61.51 Fair, 3% above
Prices checked between Oct 4 2026, 3:02 PM ET and Oct 4 2026, 3:57 PM ET.
Biggest Movers This Week
-
Makita XBP05ZB Sub-compact band saw, brushless, black / Sale ended, back to $369$369.00 Fair, 3% above -
DeWalt DWHT51439 Claw hammer, 16 oz., one-piece steel / Down 47% this week$16.99 Buy, 37% below -
DeWalt DCB205-2 Battery 2-pack, 5.0 Ah / Up 47% this week$249.00 Wait, 43% above -
Bosch GLF18V-25N Laminate trim router, brushless / Sale ended, back to $179$179.00 Fair, at usual -
Bosch GKF18V-25N Palm router / Sale ended, back to $239$239.00 Fair, 4% above
Prices checked between Oct 4 2026, 3:07 PM ET and Oct 4 2026, 3:37 PM ET.
More Klein Measuring and Testing
See all: More Klein Measuring and Testing-
Klein ET140 Pinless moisture meter$49.14 Fair, 1% below -
Klein CL120 Digital clamp meter, auto-ranging, 400A AC$63.89 Fair, 1% below -
Klein RT250KIT Voltage tester and GFCI outlet tester kit$39.97 Fair, at usual
-
Klein MM325 Digital multimeter, manual-ranging, 600V$29.98 Fair, at usual
-
Klein NCVT7 Non-contact voltage tester with LCD, 12 to 1000V AC$24.98 Fair, at usual
Prices checked between Oct 4 2026, 3:02 PM ET and Oct 4 2026, 3:52 PM ET.
Prices are the Amazon.com price for a new item. "Usual" is this tool's own price over the past 90 days or the past year, whichever is closer to today's price: the usual range is where it sat for the middle half of that time, and percentages are measured against its median price over 90 days or over the past year, whichever is closer to the current price. Out-of-stock time is left out. ToolBuck has price history for this listing going back 1,548 days. Prices and availability are accurate as of the time shown and can change. The price on Amazon at the time of purchase is the one that applies. How ToolBuck works.