Klein Tools
Klein Tools MM600
$86.49
Best Multimeters · head-to-head
Klein Tools MM600 vs Extech EX330
A sourced, side-by-side comparison. Extech EX330 is cheaper at $74.99. Every spec and price links to its source.
Extech
Extech EX330
$74.99Cheaper
Which is better: the Klein Tools MM600 or Extech EX330?
On the specs we track, they're closely matched. The Extech EX330 is the cheaper at $74.99.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Klein Tools MM600 | Extech EX330 |
|---|---|---|
| US price | $86.49 | $74.99 |
| Brand | Klein Tools | Extech |
| Released | — | — |
| Type | digital handheld | digital handheld |
| True rms | No | No |
| Max voltage dc (V) | 1000 | 600 |
| Count resolution | 4000 | 4000 |
| Auto ranging | Yes | Yes |
| Cat safety rating | CAT IV 600 V / CAT III 1000 V | CAT II 1000 V / CAT III 600 V |
| Temperature measurement | Yes | Yes |
| Low impedance loz | No | No |
Sources — Klein Tools MM600: kleintools.com (verified 2026-06-20). Extech EX330: extech.com (verified 2026-06-20).
What's the difference between the Klein Tools MM600 and Extech EX330?
Where the two actually differ on the specs we track (2 of 8). Matching specs are omitted.
- Max voltage dc (V): Klein Tools MM600 1000 vs Extech EX330 600
- Cat safety rating: Klein Tools MM600 CAT IV 600 V / CAT III 1000 V vs Extech EX330 CAT II 1000 V / CAT III 600 V