• 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
• Measures continuity, temperature, capacitance, frequency, duty cycle, and test diodes
• High visibility, reverse contrast display with automatic backlight adjustment
• Slim profile allows the multimeter to fit conveniently into most pockets

Klein Tools MM450 Multimeter is a TRMS auto-ranging (with manual option) slim multimeter that measures AC/DC voltage, AC/DC current, and resistance. It can also measure temperature, capacitance, frequency, duty cycle, test diodes, and continuity. It features high visibility and a 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 Klein Tools’ development of meters and electrical testers loaded with innovative, time-saving features.

1. 4000-count reverse contrast display

2. Function selector switch

3. 10A jack

4. COM jack

5. VΩ jack

6 . Backlight button

7. Range button

8. Max/Min button

9. Hold (data hold) button

10. SEL (select) button

11. Lead alert LEDs

12. Optical sensor