Klein Tools MM720 Digital Multimeter Review Accurate Versatile Auto-Ranging Tester Insights

Description

Highlights of the Klein Tools MM720 Digital Multimeter

Testing the Klein Tools MM720 Digital Multimeter, Auto-Ranging TRMS gave me a solid impression of its versatility and reliability. This device is no ordinary multimeter; it measures AC/DC voltage up to 1000V, 10A AC/DC current, and resistance up to 60 MΩ. Beyond the basics, it also offers temperature, capacitance, frequency, duty cycle, diode testing, and low impedance (LoZ) mode. The reverse-contrast LCD display caught my eye immediately, featuring an optical sensor that adjusts display visibility automatically according to ambient light. This made reading values much easier whether I was in a brightly lit workshop or a dim basement. The auto-ranging TRMS technology ensures measurements are accurate, which is crucial for precision work. This meter felt like a true professional-grade tool designed to meet demanding tasks with confidence.

• Measures a wide range of electrical parameters including LoZ mode
• Reverse-contrast display for excellent readability
• Auto-ranging with True RMS accuracy

Drawbacks to Keep in Mind

While the MM720 impressed me in many ways, there were a few quirks that stood out during testing. The weight of 345 grams makes it feel a bit bulky compared to some slimmer models; it’s not exactly pocket-friendly if you’re used to compact meters. Also, the corded electric power source means you rely on batteries, which can be a hassle mid-job if you forget spares—though it does come with two AAA batteries included. I noticed the test lead holders on the back are handy, but the leads themselves could have been a bit sturdier; mine showed early signs of wear after frequent use. Lastly, while the meter is rated for CAT IV 600V safety and can survive a drop from 2 meters, the plastic casing feels slightly less rugged than I expected for this price range.

• Heavier and bulkier than some competitors
• Test leads could be more durable
• Battery reliance adds potential downtime

Design and Usability

The orange and black color scheme gives this multimeter a professional and easily recognizable look. Its dimensions (about 10.6 x 5.8 x 3.7 inches) provide a comfortable grip, though I had to adjust to its size compared to smaller models. The kickstand and optional magnetic hanger are thoughtful features that allow hands-free operation when working inside electrical panels or cramped spaces. The buttons and rotary switch feel responsive but require a bit of a learning curve to navigate all the functions smoothly. The test lead holders on the back help keep everything organized, a small but smart convenience. I also appreciated the included carrying case and thermocouple probe which added value and made it easier to store and transport the kit safely.

Performance in Various Conditions

Testing this tool in different environments revealed its strengths. The reverse contrast display really shines in low light or harsh sunlight, something I struggled with on my older meter. The LoZ mode was particularly useful during a tricky task where I needed to eliminate ghost voltages, and it performed flawlessly, saving me time and guesswork. The auto-ranging feature means I didn’t have to fumble with manual settings which is a massive time-saver, especially when switching between voltage and resistance measurements on the fly. Accuracy was consistently on point thanks to the True RMS technology, which is essential for handling non-linear loads and noisy electrical signals.

Price Performance

Considering the features packed into this meter, its price to quality ratio feels justified. Professional electricians and serious hobbyists will find the range of functions and safety ratings valuable, especially in industrial or commercial settings. This device isn’t the cheapest on the market, but the durable construction rated at CAT IV 600V and IP42 adds peace of mind for high-risk environments. If you need a multimeter that can handle a variety of measurements reliably, this is an investment that pays off. However, casual users or those on a tight budget might find simpler, more affordable multimeters that cover basic needs without the extra bells and whistles.

Alternative Offerings to Consider

Comparing this model to popular options like Fluke’s 117 or Extech’s EX570, the MM720 holds its own with better safety ratings and the handy LoZ mode. Fluke meters often excel in durability and brand reputation, but come at a significantly higher price point. The Extech offers a similar feature set but lacks the reverse contrast display and doesn’t include a thermocouple for temperature readings. The MM720’s auto-ranging TRMS capability places it ahead of many competitors in terms of accuracy and versatility. Still, some rivals boast more compact designs, which might appeal if portability is your top priority. Overall, this multimeter strikes a balance between professional-grade features and practical usability.

Benefits of This Multimeter

• Highly versatile with multiple measurement options beyond voltage and current
• Reverse-contrast LCD makes readings clear under all lighting conditions
• Robust safety certifications (CAT IV 600V) suitable for industrial use

Limitations of the Klein Tools MM720

• Heavier and bulkier design reduces portability
• Test leads could be improved for better durability
• Battery-powered operation can interrupt workflow if spares aren’t handy

Additional information