wll this work on finding a leak on a fiberglass boat?

It can find 'trapped moisture' as would be expected if WITHIN the fiberglass there is a wetted plywood laminate. Certainly the moisture in that '(mapped) area' would have a source, usually a deck fitting for instance. Be careful on the 'analysis,' as it may read non-structural (decorative) wall covering on the other side. Also, try to perform studies on a 'very dry' day.

What is the accuracy of this meter, and what was it compared to or tested against?

The accuracy is ± 4%,. the reference relative drying value is the measured value of conventional air humidity (relative humidity 50%~70%, temperature 25 ℃)+compensation value of human body.

Where is this manufactured?

Looks like China in the description.

What is the difference between pinless sand pinless color?

As to what I understood, Pinless is a bit less accurate gives you moisture readings percentage based on humidity so if there is something as a metal behind it senses the coldness of metal and adds it as moisture vs pin one is dead spot on which senses the humidity as the pins go into drywall, wood etc Hope this helps

Pinless Moisture Meter For Wood Concrete Digital Wall Moisture Detector

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R$445

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Sold byAmazon BrazilDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Detect moisture before it becomes a disaster—stay one step ahead with precision and ease!

HOLD INSPECT - HOLD function freezes readings for easy documentation and comparison during inspections.
INSTANT ALERTS - Audible alarm signals high moisture levels so you can act fast and prevent costly water damage.
PINLESS PRECISION - Non-destructive sensor reads moisture without damaging surfaces—perfect for pristine walls and delicate wood.
ILLUMINATE HIDDEN RISKS - Integrated LED flashlight lets you detect moisture in dark, hard-to-reach spaces like crawl spaces and attics.
VERSATILE SURFACE COMPATIBILITY - Works seamlessly on wood, concrete, drywall, and masonry—ideal for home inspectors and DIY pros.

The Pinless Moisture Meter MT28 offers accurate, non-invasive moisture detection with ±5% accuracy, powered by an included 9V battery. Featuring an integrated LED flashlight and audible alarm, it’s designed for professionals and homeowners to quickly identify moisture in wood, concrete, drywall, and masonry without damaging surfaces. Compact and lightweight, it’s perfect for home inspections, firewood checks, and renovation projects.

Specifications

ASIN	B09BJJX1B8
Batteries	1 9V batteries required. (included)
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Zinc Carbon
Best Sellers Rank	#8,020 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4 in Moisture Meters
Color	Green
Customer Reviews	4.5 4.5 out of 5 stars (3,860)
Date First Available	August 17, 2021
Included Components	1Moisture meter,1User manual,1Storage bag,19V Battery
Item Package Quantity	1
Item Weight	5.2 ounces
Item model number	MT28
Manufacturer	SHENZHEN REDDRAGON INSTRUMENTS CO.,LTD
Material	PCB+Plastic
Measurement Accuracy	+/-5%
Mounting Type	Wall Mount
Part Number	MT19B
Power Source	Battery Powered
Product Dimensions	6.69 x 3.54 x 1.57 inches
Style	MT28
Voltage	9 Volts

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R$445

Duties & taxes included

In stock

Sold byAmazon BrazilDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Brazil.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Pinless Moisture Meter for Wood Concrete Digital Wall Moisture Detector

Description

Specifications

Common Questions