




💧 Detect damp before it damages — moisture mastery in your hands!
The Extech MO55 is a professional-grade combination pin and pinless moisture meter designed for quick, non-destructive moisture detection in wood and various building materials. Featuring a pinless sensing depth of up to 1 inch (25mm), audible alerts that increase with moisture levels, and a data hold function, it empowers users to pinpoint hidden dampness efficiently. Compact and easy to use, it’s ideal for contractors, inspectors, and savvy homeowners aiming to prevent costly water damage.


| Asin | B01IABHOUE |
| Battery Description | 9V Battery |
| Best Sellers Rank | 233,326 in DIY & Tools (See Top 100 in DIY & Tools) 2,338 in Scanners & Testers 2,545 in Sealers |
| Brand | Extech |
| Colour | Green |
| Customer Reviews | 4.3 4.3 out of 5 stars (719) 4.3 out of 5 stars |
| Eu Spare Part Availability Duration | 1 Years |
| Global Trade Identification Number | 00793950475058 |
| Included Components | Complete with pins (2), protective cap, and 9V battery |
| Item Type Name | Combination Pin/Pinless Moisture Meter |
| Item Weight | 0.27 Pounds |
| Manufacturer | Extech |
| Manufacturer Part Number | MO55 |
| Model Number | MO55 |
| Mounting Type | Freestanding |
| Number Of Items | 1 |
| Number Of Packs | 1 |
| Operating Humidity | 10-90% relative humidity |
| Product Warranty | 1 year. |
| Temperature Accuracy | 1.5°C |
| Temperature Reading Accuracy | plus_minus_1_point_5_degrees_celsius |
| Unit Count | 1 Combinación |
| Upc | 793950475058 |
| Upper Temperature Rating | 35 Degrees Celsius |
| Voltage | 9 Volts |
User
Versatile, quick and easy to check for embedded damp without surface damage.
Very useful tool in checking for hidden excess dampness in buildings and materials without leaving any marks or surface puncture damage. Quick to use with options for either surface testing pins or non damaging deeper embedded moisture and also choice of wood or general building material. Works well with wood, blocks, concrete, plaster ect. Even locates damp areas behind 'foil backed' plasterboard. Have found it can gives a false positive sometimes with some natural building stones, but this can be checked against known dry sample. Readings should be treated as indicative of relative dampness, which it is good at, although as with all these meters a digital reading calibration function would have been useful.Easy to use, clear large display. Good value. Highly recommended.
User
Really easy to use, does the job, saved us money in finding leak
Used it to successfully locate the source of damp in our kitchen and one of the bathrooms. Thanks to this handy little device we didn't have to tear up the entire rooms to find the problem, which turned out to be a leaky pipe in both cases. We could pinpoint where it was wettest and then just remove that tile, and in fact that's where the problem originated from.We found it very easy to use despite having virtually zero DIY experience, and well worth the investment. Will definitely be using this regularly to check the bathrooms and kitchen in our place.
User
Quality meter
I've had several different moister meters over the years. This one seems really good quality. Various modes and functions all work well. Seems accurate as well. A versatile meter that is good value.
User
This works.
I have a Brennenstuhl model, that has only pins, pins are ok for wood an brick but not so good for detecting wood panels in a motorhome or caravan, this works as a scanner, so is easy to use.Dont listen to keyboard warriors who claim they have a £300 scanner and this is inferior, IT DOES WHAT IT SAYS ON THE TIN, detects Water Ingress, and Damp Panels.
User
Pronged is excellent, wireless not so much
Hit and miss.When used with my professional graded it was surprisingly very close, it was bought for a friend's van.But the wireless part was reading way way too high giving readings off up to 80% I believe it was reading through to van onto the outsideSo for pronged use I recommend. For wireless I don't
User
Moisture Meter
This has been invaluable in measuring the amount of dampness in my house. I had a huge amount of water ingestion.. After it was fixed I wanted to keep a check on things. It has proved very helpful.
User
Pretty good for the money
It's easy to use, not too expensive - I've tried the cheaper end of the market and they were useless - and seems reasonably accurate so far.
User
Good tool
Hard to tell how precise it is. I only have hygrometers that I used on my 3D printer materials to compare and those are already 10% off, but it's a good indicator of areas that need attention. Using it to fix up an old house.
User
Extech MO55 Moisture Gauge
Good product and accurate readings for the DIY person doing their own renovation projects at home
User
Cumple su funcion - CORRECTO
Lo compre por discrepancias con otras marcas, la verdad es que es algomas caro pero he de reconocer que es practico en uso y sencillo de usar.Ademas tiene la funcion de usarlo sin los pinchos de forma inductiva que se agradece cuando te ponen mala cara al sacar las puntas.En mi opinion es lo esperado y correcto.
User
Bon rapport qualité prix
Très simple d'utilisation.
User
Good product
Very good quality and easy to use
User
The Extech MO55: A Moisture Detective’s Best Friend – D & D Approved! 🔍💧✅
If Sherlock Holmes were a home inspector, he’d carry the Extech MO55 in his pocket like a magnifying glass for moisture mysteries! This little gadget is like a truth serum for damp drywall, stubborn subfloors, and sneaky wooden beams that think they can hide moisture from us. Think again, fellas!As a backup for D & D Home Inspection Services, the MO55 has been a rockstar—quick, reliable, and precise! Whether we’re using the pin mode for those deep investigations or the pinless mode for a less invasive check, it delivers the facts fast. The audible alert is an absolute bonus—it basically shouts, 'Hey! Something’s fishy here!' (or should I say… damp?).Lightweight, easy to use, and built to handle the rough-and-tumble world of home inspections, this meter has already proven its worth. If moisture had a lawyer, it would hate this device. Highly recommend for pros and homeowners alike—D & D gives it a solid ✅!
Trustpilot
1 month ago
1 month ago