Klein MM700 vs MM720: A Real Jobsite Test

Klein MM700 vs MM720 is a big choice for daily wire jobs. I test many tools on real jobs for a living. I took both of these tough meters to work with me. I want to share my true hands on test with you today.

Real World Test of the Klein MM700

I used the old meter on my jobs for three full weeks. I took it to dirty and dusty work sites every day. I checked basic house wires and main fuse boxes. It feels very tough in my bare hands right out of the box. The thick rubber grip is great to hold. I dropped it twice from a small ladder onto hard rock floors. It did not break or crack at all. It is built to last a very long time on hard jobs.

The screen works fine in standard room light. It is easy to read indoors when you fix things. But the bright sun makes it hard to see outside. You must tilt it in your hand to read the numbers outside. I used the low power mode a lot on old house jobs. It finds fake voltage very fast to keep you safe. The main big dial clicks hard and stays put. You can turn it with one thumb in a tight spot. I did this while I held a wire probe in my other hand. The test probes feel nice in my hands. The wires are thick and very safe.

The battery lasts a very long time on this tool. I used it for weeks with no drop in test power. It uses two normal small batteries that you can buy anywhere. The quick sound test is very fast and loud. It beeps right away when a wire fuse is good. I like a fast loud beep on a noisy work site. The tool has a strong kick stand on the back. It holds the tool up for me on a desk. I can look at the screen while my hands stay full of wires.

It is a great tool for the fair cost. I checked its daily numbers against my top pro meter. I tested standard wall plugs in a large kitchen. I checked light switch parts in a dark room. The numbers matched my top tool every single time. The test results did not jump around at all. It is a very safe and true tool for daily wire jobs. You can trust it to do basic tasks well.

Real World Test of the Klein MM720

I swapped to the new meter for my next big jobs. I wanted to see if the new parts help in real life. The new smart screen is the best part by far. It is a dark screen that lights up on its own. The numbers glow bright like a clock radio. I took it down to a black and dirty basement. The screen sensor lit up the glass right away. I saw the numbers clearly in the pitch black dark. I did not need to press a light button with my thick gloves on.

This new tool tests much higher ranges for big fixes. I checked large motor parts with it on a hot day. It reads farads up to a very high six thousand count. The old tool stops at four thousand count. It also checks much higher wire ohms for complex boards. I used this on big house machines and heat pumps. It helps a lot when you fix complex parts. It gives you more room to work on hard tasks.

I did a tough heat check with it in the snow. I fix things in very cold weather all the time. This tool reads heat far below zero degrees. The old one stops right at the zero mark. This makes the new meter great for deep winter jobs. It also feels very light to hold in my palm. It sheds some extra weight off the old frame. It is easy on my bare hands. I held it for hours with no pain or cramps.

It gave me true and safe numbers all week long. I checked big motors and got very safe reads. The tool thinks and acts very fast on the job. I saw no bugs or flaws in a whole month of use. The probes plug in tight and stay in place. It is a great step up for a pro worker. You will love it if you work in dark tight spots.

Details Comparison for Klein MM700 vs MM720

These two tough tools share the same hard shell shape. But they act very different on a real and busy job. Here are five main things you must know about them.

Screen and Light Use

The screen is a huge change for real jobs. The old meter has a plain flat light screen. It works fine inside a bright room or hall. But it looks dark and dull in the bright sun. The new meter has a smart dark glow screen. It reads the room light around you. Then it makes the numbers glow bright for you. It is perfect for dark fuse boxes in a home. The new screen has a glass face on it. This glass looks great in the dark. But it acts like a mirror in the sun. You might see your own face in it outside.

High Range Test Limits

Most daily jobs are simple and fast. You do not need extreme test limits all the time. But some big jobs need more power from your tool. The old meter stops at a lower point. The new one goes much higher for hard jobs. It tests up to six thousand farads on a motor cap. I needed this for a big AC fix last week. The new one wins for big machine fixes. If you just do basic home wires, you may not care. But for big parts, the new tool is much better.

Cold and Hot Weather

Heat checks are key for big AC jobs. Winter gets very cold in the town where I live. The old tool reads down to the zero mark. It stops working in a deep freeze storm. It will just show an error code on the screen. The new tool reads deep below zero in the snow. It also checks much higher heat points safely on a stove. This makes the new meter a true all year tool. You can use it in the dead of winter with no stress.

Size and Hand Feel

Both tools feel right on a dirt job site. They both have thick rubber coats to keep them safe. They both live through big drops from a tall ladder. But the new one is a bit smaller in size. It sheds some true weight off the back. It feels much lighter in my palm on a long day. It helps stop hand cramps when you hold it tight. The main dials feel very firm on both tools. You can turn them both while you wear thick work gloves.

True Work Accuracy

Both meters are very safe for a pro to use. Both meters give you the true numbers you need. I ran them side by side on live hot wires. They both gave me the same steady reads all day. The numbers did not jump fast on the screen. The quick sound test is loud and clear on both. The fake voltage trap works great to keep you safe. You can trust both tools with your life on a job. They do not drift or fail when you need them most.

Both of these meters are great buys for your tool bag. The old model is fine for plain home wire jobs. But the new one gives you a much better smart screen. It also gives you wide test limits for hard jobs.