Klein Tools ET140 Pinless Moisture Meter for Non-Destructive Moisture Detection in Drywall, Wood, and Masonry; Detects up to 3/4-Inch Below Surface

Very useful and work perfectly

After dealing with a suspicious damp spot near our bathroom wall, I picked up the Klein Tools ET140 and I'm genuinely impressed. This pinless meter scans up to 3/4 inch below the surface without poking holes in your drywall, which was exactly what I needed to track down a slow leak without causing more damage in the process. Setup took maybe two minutes — power it on, select your material type, and start scanning. The readings were consistent and repeatable, which gave me real confidence I was getting accurate data rather than random numbers. I was able to map out the moisture boundary around the affected area and confirm when it had fully dried after repairs, which was incredibly useful. At $49.97, this feels like a genuinely fair price for a Klein Tools product. The build quality is solid, the interface is straightforward, and it performed reliably every time. Whether you're a homeowner doing preventive checks or dealing with active water damage, this meter earns its place in the toolkit. No complaints whatsoever.

Muito bom! Ótimo custo benefício!

Ne convient pas pour un mur en stepoc ou béton armé. Les barres en métal faussent la lecture du taux d'humidité. Etant donné que le métal est très conducteur, il considère que le mur est très humide. Déçu.

Habe ich gekauft für mein Wohnmobil und damit Feuchtigkeit am großen Panoramafenster (Dichtung) entdeckt, von Werkstatt bestätigt. Bisschen teuer, aber wahrscheinlich seinen Preis wert.

I don't know how this tool works, but it's magic. It is very easy to use and causes no damage to the surface being tested. The hardest part of using this tool is finding a flat surface that fits the entire unit. Most of the time that's not a big deal because floors, walls, wooden boards etc. are pretty flat. My challenge was with crown mouldings. The sensor is a small patch on the back of the meter, but to get the sensor to lie flat on the wall you need the entire unit to lie flat. Fortunately this is easier to use than a stud sensor because you just need to find some orientation that gets a portion of the sensor into contact with your surface of interest. In addition, you can see the readout change as you approach the surface so you can tell how well you are doing. Measuring the moisture level of a dry area helps to determine if you are getting good enough contact to the region of interest. For my need this was much better than a pin type meter because it did not drive any holes or pinpricks into the surface of my walls. Because it causes no damage I was able to test many areas to determine what dry was before getting to the area of concern. I definitely would not have done that if it meant putting little holes into the wall.