Best Multimeters · Klein Tools · Updated June 2026
Klein Tools MM400: specs and price (2026)
Klein Tools MM400 has a US price of $54.97 (Street price (discontinued; replaced by MM420)). Below is its full, sourced spec sheet — every value links to the source and the date we captured it.
Specifications
| Price (US) | $54.97 Street price (discontinued; replaced by MM420) |
|---|---|
| Brand | Klein Tools |
| Released | — |
| type | digital handheld |
| true rms | No |
| max voltage dc v | 600 |
| count resolution | 4000 |
| auto ranging | Yes |
| cat safety rating | CAT III 600 V |
| temperature measurement | Yes |
| low impedance loz | No |
Source: kleintools.com (verified 2026-06-20) · corroborated by data.kleintools.com. Klein Tools product page (now showing 'no longer in production', recommends MM420) confirms non-TRMS, 4000-count LCD, 600 V DC, CAT III 600 V, auto-ranging, and temperature measurement. Street price ~$54.97 from distributors.
Frequently asked questions
How much does the Klein Tools MM400 cost?
The Klein Tools MM400 has a US price of $54.97 (Street price (discontinued; replaced by MM420)), as of 2026-06-20.
What are the Klein Tools MM400's key specs?
Klein Tools MM400 (Klein Tools): type digital handheld, true rms No, max voltage dc v 600, count resolution 4000, auto ranging Yes. Full sourced spec sheet verified 2026-06-20.
How it compares
Compare with
Cheaper multimeters
- Amprobe AM-510 $47.95
- AstroAI DM6000AR $39.99
Step up
- Innova 3340 $69.99
- Extech EX330 $74.99
- Klein Tools MM600 $86.49
- Klein Tools MM700 $99.97
- Fieldpiece HS33 $245
- Fluke 115 $279.99
More from Klein Tools
- Klein Tools MM600 $86.49
- Klein Tools MM700 $99.97