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Model # E49MM01

Internet # 202048566

Pinless Moisture Meter

This item has been discontinued.
The Home Depot no longer carries this specific product.

$39.97 /each




Model # E49MM01

Internet # 202048566

Ryobi introduces the Ryobi Digital Pinless Moisture Meter. This tool is perfect for measuring moisture in hardwood, softwood, drywall and masonry materials and can help you detect conditions for potential mold growth. To learn more about Ryobi tools go to and check out Ryobi Nation. See below for more information on this tool.

California residents: see  Proposition 65 information

Info & Guides

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Product Depth (in.) 
1.38 in 
Product Height (in.) 
8.825 in 
Product Width (in.) 
5.875 in 
Abrasion-Proof Display Lens 
Audible Alert 
Automatic Calibration 
Automatic Temperature Compensation 
Batteries Included 
Battery Charger Included 
Battery Power Type 
Battery Size 
Case Included 
Control Type 
Data Log/Record 
Data hold 
Display Type 
External Electrode 
Not Supported 
Extra Pins/Probes Included 
Interchangeable Pins/Probes 
Low Battery Indicator 
Maximum moisture reading (%) 
Maximum sense depth (in.) 
Measureable materials 
hardwood, softwood, drywall, and masonry 
Microcontroller Circuit 
Minimum moisture reading (%) 
Number of Batteries Required 
Product Weight (lb.) 
0.46 lb 
Reference Scale Included 
Test Meter Type 
Moisture Meter 
Tools Product Type 
Test Meter 
Warranty / Certifications
Manufacturer Warranty 
2 year 


Rated 3.9 out of 5 by 25 reviewers.
Rated 1.0 out of 5.0 by Useless I've been using a protimeter surveymaster for many years, and was looking for an inexpensive backup device, but this isn't it. The protimeter showed 10% - 12% while using it on drywall, but the ryobi showed nothing. I got a paper towel wet and put it underneath a very thin floor mat; the protimeter easily identified the location of the wet paper towel, while the ryobi showed nothing. If it can't find moisture with a simple test like this, it's useless. May 3, 2013
Rated 4.0 out of 5.0 by Ryobi Moisture Meter For $50 or so, this is a decent meter, and one you can buy in the store. I also performed the wet paper towel test under a thin board, and it detected the water immediately. This meter does 0.5 inch depth so may not be effective through carpet, but is still great for analyzing specific areas of the house, such as known areas which may have had spillage or some flooding in the past. Example I lifted a floor vent out and put the meter under the carpet onto the wood underfloor. Also detected through the vinyl floor in the kitchen. Also measured wall and concrete successfully. Also measured the moisture readings on my back deck. It was quite consistent in taking readings when going back to spots here and there. Compared to another particular $350+ similar type meter that gave you 0.75 depth and similar functions, it's worth the low price. You also have 90 days to return it is not for you. December 19, 2013
Rated 4.0 out of 5.0 by Easy to use, does the job. Would have preferred pin-type, but this was what they carried in the store. Used it to map out wet sheetrock in the ceiling so I knew where to tear out. Has 2 flat sensors on the back about 4 inches apart that need to lay flat on the material. Hardwood, softwood, masonry and drywall modes. Also a "hold" button so you can store a reading in case you are reading somewhere that's not visible. Worked well. Only bad thing was that it came with a cheap 9-volt battery that was dead. After replacing it worked great. July 23, 2012
Rated 5.0 out of 5.0 by works great This product showed exactly where the moisture was in my walls and floor after the fire sprinkler broke in my home. When I opened up the wall, it was wet and the mold had begun to set in. This Ryobi poduct saved me so much from further damage to my home. The inexpensive price of the moisture meter is well worth this product. Very happy with this product and this is the first review I've ever written. January 1, 2014
Rated 1.0 out of 5.0 by Not accurate, sensor area too large. This meter picks up all metal within walls - nails, corner beads, wiring, etc. Without the pins there is no way to 'pinpoint' a specific location. All you can do is get in the general area - if there is metal(even close by) you will get a false reading. Moisture meters work based on continuity so metal will cause false readings on any meter but with such a large sensor area(instead of pins), it is difficult to stay away from metal in small spaces. April 5, 2012
Rated 5.0 out of 5.0 by Easy to use moisture meter This is an easy to use meter which meets all expectations of measuring moisture in household walls at this price point. The large-area contacts insure a low contact resistance which prevents isolated spots from skewing the readings. Although I made no comparison with a calibrated meter, use of this meter over several weeks has shown consistency of readings over time and over areas that were suspected of harboring moisture after a winter of water build-up behind roof ice-dams. The 'hold' feature is especially useful for making measurements in hard to view areas. The grip and weight make it a natural extension of your hand. All-in-all, this meter is thoughtfully built with a home user in mind. May 12, 2015
Rated 4.0 out of 5.0 by in general, works well In general, works well, but size is quite big, so hard to get to tiny locations. Used for two weeks, got a lot of scratches already. Easy indication from green to red and shows numbers as well. December 31, 2013
Rated 5.0 out of 5.0 by Accurate moisture reader Bought this to measure moisture readings in drywall after a recent water leak. It works great and can easily pinpoint where the drywall is wet and where it's dry, even though none of it is wet to the touch. I've taken several readings over the past few weeks and watched the moisture level go down as the drywall dries out May 14, 2014
  • 2015-11-29 T09:54:50.314-06:00
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