General Tools Digital Moisture Meter MMD7NP - Humidity Sensor- Pinless and Non-Invasive

It works very good, ..To measure humidity especially in showers, etc

Good

The meter is easy to use. Unfortunately, the first unit received had a dead 9 V battery. Exchanged for another unit which had a good battery (the battery is not a good quality). I did compare the readings from both units. Both units read within 10% of each other. They are repeatable but I had no way to determine absolute accuracy. The meter is sensitive. Moving an inch or two made a significant difference. Retaking the same reading in the same spot was repeatable, got the same reading. Very easy to read display. Very useful, kept this unit!

Had a flood in house and needed to check for [potential moisture

The media could not be loaded. My laundry room flooded and I'm replacing the flooring. The moisture is in the sub flooring - along with the existing flooring. The floor company told me to buy a moisture reader to monitor the sub floor, because they cant install replacement/new flooring until the reading is less than 5%. When I first got this reader it was over 50% on the sub floor, so I have been using heaters and fans. Now it is down to 25% - but the best thing is... I know nothing about flooring or moisture or how to use moisture readers, but this is super intuitive and easy to use.> Just hit one button to tell it what material it is "wall, hardwood, softwood", etc. then it's super easy - just lay the reader where you want it to read and it does the rest.> Seems very accurate. If i test, then re-test again, readings stay consistent.> Would be easy to locate a leak. You really do just run it over surfaces and it will change in real time. I personally dont have an active leak, but this is accurate and can pin point areas that are more moist than others.> In the video - the sub floor is less moist than the flooring that was soaked and is still installed. You can see how it detects different moisture levels in different areas. Very nice way to monitor as moisture levels go down.> OVERALL - so happy I went with this model, even though I was comparing it with a couple others that were a little cheaper. This one works VERY VERY well.. that's all that is important when your in a situation where you need one of these. If you buy a cheaper one, that may not be as accurate - you will be kicking yourself later when your entire project is up in the air and your going to spend that extra $10 at Starbucks because your stressed out and need coffee :)

Good meter, just wish it was a little more rugged. This is my 3rd and they just dont last. The screens go after a few years.

Regularly used on work sites, this digital moisture meter proved invaluable during the 2024 hurricanes for assessing water damage in homes.

Bought this to use at our house. Instructions weren’t great, but we figured out how to use it. It didn’t pick up any moisture on walls (0%) and only up to 35% on floors. Other meters picked up 15-80% moisture in those same areas. Not sure if the one we received was just defective, but I ended up returning this moisture meter.