General Tools LCD Moisture Meter #MM8 - Leak and Humidity Detector - Pinless and Non-Invasive

Cool device that tells you if there's moisture in your walls. If you own a home this is a mist have. It reads instantly and still works great.

This is a great little moisture reader.I have tried other models and they give you some numbers and different modes for different types of material but what do you do with the numbers??? what is a "normal" reading? etc...I used this to detect possible leaks in the walls.Most moisture meters out there tend to specialize for measuring moisture in wood and various material.This one works really really well for regular dry wall!You drag it slowly along the wall near areas where you suspect there might be a leak.For my part, it discovered that while there was no pipe leak, there WAS a lot of wicking moisture from the grout in the shower to the backing drywall material (an old shower without a waterproof membrane).The meter was VERY clear. In most area, it would show 0% moisture. As I approached the shower, it gradually increased all the way to 100%... There is also a color scale indicator (from green (OK) to RED... bad/wet!). And once you pass a certain level of moisture, the meter will also beep!Like I said... NO AMBIGUITY with this device.It will tell you in simple terms: You are OK or HEY! There is excess moisture in this wall!Verdict: GET IT!Get it if you suspect moisture or water leak in a wall.At about 20% moisture, you may start having some mold in the wall.This meter is affordable... it's worth having one on hand!

The meter will work on most surfaces but it is not a complete answer.

We recently had a plumbing leak that resulted in water under the flooring and also in the drywall. We had professional mitigation come to dry everything. The noise of multiple large fans and dehumidifiers was overpowering and we were anxious to have the process finished. We ordered this moisture meter so we could judge the progress ourselves. I feel that it definitely helped shorten the process because we could be confident that the walls were dry. The meter functioned quickly and accurately. It was easy to understand the readings.

The media could not be loaded. I had heard water noise from upstairs and was afraid of a leak. Its a nice one to keep an eye on things without poking holes in the dry wall.Just be aware that it will beep next to metal pipes/studs in drywall.

It seems to me that the results are not very precise, they vary a lot with other instruments of greater precision, if I put them in direct contact with a surface such as dry concrete, 80% humidity appears, I do not know if the measurement should be done without touching the surface and depending on the distance the results vary, there is no manual for performing a correct measurement method.

I use this product to measure moisture content and foods that I freeze drying it works great and it’s the best thing for the Buck.

The one day I needed it when I had a leak on my roof, the screen didn't work. I've replaced it with 3 different batteries. It works, but now I can't tell what mode I'm in. A tool should not break this early.