Explore business holiday savings
To see product details, add this item to your cart. You can always remove it later.
Ships from
Ships from
Returns
Returnable until 31 Jan 2026
Returnable until 31 Jan 2026
For the 2025 holiday season, eligible items purchased between 1 November and 31 December 2025 can be returned until 31 January 2026.
Support
Product support included
What's product support?
In the event that your product does not work as expected or you need help using it, 鶹 offers free product support. To access this option, go to Your Orders and choose Get product support.
Payment
Secure transaction
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Added to

Sorry, there was a problem.

There was an error retrieving your wish lists. Please try again.

Sorry, there was a problem.

List unavailable.
  • Klein Tools MM450 Slim Digital Multimeter, Reverse Contrast Display with Lead Alert, Auto-Ranging TRMS, 600V AC/DC Voltage, Current, Resistance, Temp, Frequency, Continuity
  • To view this video, download

Klein Tools MM450 Slim Digital Multimeter, Reverse Contrast Display with Lead Alert, Auto-Ranging TRMS, 600V AC/DC Voltage, Current, Resistance, Temp, Frequency, Continuity

4.5 out of 5 stars 227 ratings

To see product details, add this item to your cart. You can always remove it later.

Purchase options and add-ons

About this item

  • 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

Frequently bought together

This item: Klein Tools MM450 Slim Digital Multimeter, Reverse Contrast Display with Lead Alert, Auto-Ranging TRMS, 600V AC/DC Voltage, Current, Resistance, Temp, Frequency, Continuity
$97.98
Get it by Monday, Nov 17
Only 6 left in stock.
Sold by Canadian Distribution and ships from 鶹 Fulfillment.
+
$28.03
In Stock
Ships from and sold by 鶹.ca.
+
$7.76
Get it by Monday, Nov 17
In Stock
Sold by Comforty and ships from 鶹 Fulfillment.
Total price:$00
To see our price, add these items to your cart.
Details
Added to Cart
Some of these items ship sooner than the others.
Choose items to buy together.
Brief content visible, double tap to read full content.
Full content visible, double tap to read brief content.

Videos for similar products


From the manufacturer

Klein Tools
Klein Tools

klein tools
About Klein Tools

As an American manufacturer of hand tools for more than 160 years, Klein Tools makes premium-quality, professional-grade tools that deliver performance, durability and precision. Our team continues to put six generations of expertise into each tool by using the highest quality materials and superior workmanship.

Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day … Since 1857.

Multimeter, Slim Digital Meter, Auto-Ranging TRMS, 600V AC/DC Voltage, Current, Resistance, Temp, Frequency, Continuity

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.

  • 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 MΩ 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
  • Low battery indicator and easily accessible battery and fuse compartment
  • Durable meter built to withstand a 6.6-Foot (2 m) drop
  • Includes carrying pouch, safety rated CAT III 1000V/CAT IV 600V test leads, thermocouple with adapter and 2 x AAA batteries

FEATURES

Klein Tools

Multimeter ensures improved accuracy with auto-ranging TRMS

Klein Tools

Meter measures up to 600V AC/DC voltage and 10A AC/DC current

Klein Tools

Slim profile and Lead-Alert with LEDs for lead placement

MM450
MM325
MM420
MM720
Customer Reviews
4.5 out of 5 stars 227
4.7 out of 5 stars 2,149
4.6 out of 5 stars 411
4.7 out of 5 stars 250
Mfg. No. MM450 MM325 MM420 MM720
Slim Digital Multimeter, TRMS Auto-Ranging, 600V, Temp Digital Multimeter, Manual-Ranging, 600V Digital Multimeter, TRMS Auto-Ranging, 600V, Temp Digital Multimeter, TRMS Auto-Ranging, 1000V, Temp, Low Impedance
Voltage 600V AC/DC 600V AC/DC 600V AC/DC 1000V AC/DC
Frequency 1 Hz - 50 KHz 1 Hz - 50 KHz 1 Hz - 500 KHz
Current 10A AC/DC 10A DC 10A AC/DC 10A AC/DC
Capacitance 400 µF 400 µF 6000 µF
Ohms (Resistance) 50 MΩ 50Ω 60Ω
Temperature Range -40° to 1832°F (-40° to 1000°C) -40° to 1832°F (-40° to 1000°C) -40° to 1832°F (-40° to 1000°C)
Included Carrying Pouch, Test Leads, Thermocouple with Adapter, and Batteries Test Leads, Batteries, and User Manual Test Leads, Batteries, Thermocouple, and User Manual Carrying Case, Test Leads, Thermocouple, Batteries, and User Manual
ET600
MM320KIT
CL320KIT
CL120KIT
RT250KIT
NCVT5KIT
Customer Reviews
4.7 out of 5 stars 1,331
4.8 out of 5 stars 2,218
4.6 out of 5 stars 1,292
4.6 out of 5 stars 809
4.8 out of 5 stars 1,687
Mfg. No. ET600 MM320KIT CL320KIT CL120KIT RT250KIT NCVT5KIT
Description Insulation Resistance Tester Digital Multimeter Electrical Test Kit HVAC Electrical Test Kit Clamp Meter Electrical Test Kit Premium Dual-Range NCVT and GFCI Receptacle Tester Electrical Test Kit Dual Range NCVT and GFCI Receptacle Tester Electrical Test Kit

Product information

Technical Details

Manufacturer ‎Klein Tools
Part Number ‎MM450
Product Dimensions ‎16.51 x 8 x 2.77 cm; 260.82 g
Batteries ‎2 AAA batteries required. (included)
Item model number ‎MM450
Is discontinued by manufacturer ‎No
Size ‎One Size
Colour ‎Orange/Black
Material ‎Blend
Power Source ‎Battery Powered
Item Package Quantity ‎1
Measurement Accuracy ‎See instructions
Certification ‎Cat Iii 600v, Ce, Ukca Certified
Included Components ‎Slim Digital Multimeter, TRMS Auto-Ranging, 600V, Temp
Batteries Included? ‎Yes
Batteries Required? ‎Yes
Battery Cell Type ‎Alkaline
Warranty Description ‎See Manufacturer Website
Item Weight ‎261 g

Additional Information

ASIN B0B6WW5ZX8
Customer Reviews
4.5 out of 5 stars 227 ratings

4.5 out of 5 stars
鶹 Rank
Date First Available April 21 2023

Feedback

Klein Tools MM450 Slim Digital Multimeter, Reverse Contrast Display with Lead Alert, Auto-Ranging TRMS, 600V AC/DC Voltage, Current, Resistance, Temp, Frequency, Continuity


Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

Where did you see a lower price?

Price Availability
/
/
/
/
Please sign in to provide feedback.

Product 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.

Top Brand: KLEIN TOOLS

Highly Rated
100K+ customers rate items from this brand highly
Trending
50K+ orders for this brand in past 3 months
Low Returns
Customers usually keep items from this brand