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KLEIN TOOLS

600-Volt Slim Digital Multimeter

Mfg.#: MM450
Sku#: 3943099

$79.99 /EA

Multimeter with automatic ranging true root mean square (TRMS) technology for increased accuracy
Measures up to 600V AC/DC voltage, 10A AC/DC current and 50 M? resistance, continuity, temperature, capacitance, frequency, duty-cycle, and test diodes
High visibility, reverse contrast display with automatic backlight adjustment
Lead-Alert protection with LEDs for test lead placement
Slim profile allows multimeter to conveniently fit into most pockets

* Estimated stock levels as of Sat, Apr 18, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.

Description

Klein Tools MM450 Multimeter is a TRMS auto-ranging slim multimeter that measures AC/DC voltage, AC/DC current, and resistance. It can also measure temperature, capacitance, frequency, duty-cycle, and test diodes and continuity. It features a high visibility, reverse contrast display with an optical sensor to automatically optimize viewing in dark or bright ambient light. The slim profile of the MM450 makes this meter almost the size of a cell phone and it conveniently fits into most pockets. The MM450 features the same quality leads you have come to expect from the Digital Multimeter line at Klein Tools. 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.

Specifications

General

Color	Orange/Black
Current Rating	10A AC/DC
Display	4000 Count LCD
Drop Protection	6.6' (2 m)
Frequency Hz	1 Hz to 50 KHz
Includes	Multimeter, Carrying Case, Test Leads with CAT III/CAT IV Safety Caps, Thermocouple, Instructions, 2 x AAA Batteries
Material	ABS, Electrical Components
Resistance	50 M?
Temperature Range	-40° to 1832°F
Type	Digital Multimeter
Voltage	600V AC/DC