Digital Multimeter, Manual-Ranging, 600V


This product is no longer in production
  • Multimeter measures up to 600V AC/DC voltage, 10A DC current and 2MOhms resistance
  • Voltage tester for batteries, diodes and continuity
  • Built to withstand a 3.3-foot (1m) drop and withstand daily wear and tear on the job site
  • For use in basic and controlled electromagnetic environments such as residential, business and light-industrial locations
  • CAT III 600V safety rating
  • Low battery indicator and easily accessible battery compartment
  • Includes test leads, batteries and user manual
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Klein Tools MM300 Multimeter is a manual ranging multimeter that measures AC/DC voltage, DC current, and resistance. It can also test batteries, diodes, and continuity. Klein Tools’ Test and Measurement product line was exclusively designed from the ground up by electricians for electricians. Years of field research, combined with extensive input from electricians across America, inspired the development of meters and electrical testers loaded with innovative, time-saving features.

2 x AAA
Drop Protection:
3.3' (1 m)
2000 Count LCD
Measures up to 600V AC/DC voltage, 10A DC current and 2MΩ resistance. Tests batteries, diodes and continuity
600V AC; 600 V DC
10A DC
Ohms (Resistance):
CAT III 600V; CE Certified
Test Leads, Batteries, and User Manual
Overall Length:
6.00'' (15.2 cm)
Overall Height:
1.78'' (4.5 cm)
Overall Width:
3.16'' (8 cm)
8.2 oz (231 g)
Additional Information
  • Do not attempt to measure resistance or continuity on live circuits.
  • Read, understand and follow all instructions, cautions and warnings attached to and /or packed with all test and measurement devices before each use.
  • Do not use the meter during electrical storms or in wet weather, and do not use the meter or test leads if they appear to be damaged.
  • Before each use verify meter operation by measuring a known voltage or current.