The Klein Tools MM100 is a manual-ranging digital multimeter rated CAT III 600V intended for basic electrical testing. It measures AC/DC voltage up to 600V, DC current up to 10A, and resistance up to 2 MΩ. The 2000-count display and ±0.5% DC accuracy support straightforward readings. Features include audible continuity, data hold, diode test, battery test, lead storage, and a protective rubber boot. Low battery indicator and auto power-off extend service life. This product has been discontinued. Backed by Klein Tools' 1-year limited warranty.
Is the MM100 still available?
No — the MM100 has been discontinued. The MM325 is the current manual-ranging replacement, adding a higher CAT III 600V safety rating.
What was the MM100?
A basic manual-ranging average-sensing multimeter rated for 600V AC/DC, suited for residential circuit verification where auto-ranging and True RMS were not needed.
What replaced it?
The MM325 (manual-ranging, average-sensing, 600V) is the direct current equivalent.
# Klein Tools® MM100 Manual Ranging Multimeter **Model:** `MM100` **Brand:** Klein Tools **Category:** Multimeter > The Klein Tools MM100 is a manual-ranging digital multimeter rated CAT III 600V intended for basic electrical testing. It measures AC/DC voltage up to 600V, DC current up to 10A, and resistance up to 2 MΩ. The 2000-count display and ±0.5% DC accuracy support straightforward readings. Features include audible continuity, data hold, diode test, battery test, lead storage, and a protective rubber boot. Low battery indicator and auto power-off extend service life. This product has been discontinued. Backed by Klein Tools' 1-year limited warranty. ## Specifications | Attribute | Value | |---|---| | Product Type | Digital Multimeter | | True Rms | No | | Auto Ranging | No | | Voltage Range Ac | 600V AC | | Voltage Range Dc | 600V DC | | Current Range Dc | 10A DC | | Resistance Range | 2 MΩ | | Low Impedance Loz | No | | Nist Calibrated | No | | Display Type | LCD | | Display Count | 2,000 | | Cat Rating | CAT III 600V | | Battery Type | 9V | | Overall Length In | 5.75 | | Barcode (UPC) | 092644691508 | | Warranty | 1-year limited | ## What's Included - Test leads - Battery Source: https://www.jaspecs.com/klein-tools/multimeter/mm100-klein-tools-manual-ranging-multimeter/