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

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RDINSCOS Pinless Wood Moisture Meters Drywall Mold Moisture Detector for Lumber Concrete Building -Wall Moisture Sensor Digital Humidity Tester for Firewood (Pinless) | Non Destructive,Moisture Tester, Audible Alarm & HOLD Function, Ideal for Firewood, Lumber, Home Inspections

RDINSCOS Pinless Wood Moisture Meters Drywall Mold Moisture Detector for Lumber Concrete Building -Wall Moisture Sensor Digital Humidity Tester for Firewood (Pinless) | Non Destructive,Moisture Tester, Audible Alarm & HOLD Function, Ideal for Firewood, Lumber, Home Inspections

Product ID: 385288193

📊3-color LED + backlit LCD display

📏Pinless tech protects surfaces

🔋Includes 9V battery for instant use

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MOP$612

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Sold byAmazon MacauDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Pinpoint moisture without the mess—stay ahead of mold and damage!

USER FRIENDLY INTERFACE - Large backlit LCD with HOLD, auto power-off, and out-of-range alarms for effortless readings anytime.
MOLD PREVENTION MADE SIMPLE - Detect hidden dampness early to stop mold before it starts—protect your home and health.
DAMAGE FREE MOISTURE DETECTION - Pinless design means zero surface punctures—preserve your project’s flawless finish.
TRUSTED RELIABILITY WARRANTY - Backed by a 3-year replacement warranty—professional-grade quality you can count on.
INSTANT VISUAL AUDIBLE ALERTS - Tri-color LED and high-pitch tones pinpoint moisture hotspots fast—no guesswork needed.

The RDINSCOS Pinless Wood Moisture Meter offers precise, non-invasive moisture detection with a large backlit LCD and tri-color LED indicators. Powered by an included 9V battery, it delivers audible alerts and easy-to-read measurements to help professionals and homeowners prevent mold and protect surfaces. Lightweight and reliable, it comes with a 3-year replacement warranty, making it a smart, durable tool for any moisture-sensitive project.

Specifications

ASIN	B09BJJX1B8
ASIN	B09BJJX1B8
Batteries	1 9V batteries required. (included)
Batteries	1 9V batteries required. (included)
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Zinc Carbon
Best Sellers Rank	#44,901 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #29 in Moisture Meters
Color	Green
Customer Reviews	4.5 4.5 out of 5 stars (3,402)
Customer reviews	4.5 4.5 out of 5 stars (3,402)
Date First Available	17 August 2021
Date First Available	17 August 2021
Item Package Quantity	1
Item Weight	148 g
Item model number	MT28
Item model number	MT28
Manufacturer	SHENZHEN REDDRAGON INSTRUMENTS CO.,LTD
Manufacturer	SHENZHEN REDDRAGON INSTRUMENTS CO.,LTD
Material	Wood
Part number	MT19B
Plug Profile	Wall Mount
Product Dimensions	17 x 9 x 4 cm; 148 g
Product Dimensions	17 x 9 x 4 cm; 148 g
Style	Pinless
Voltage	9 Volts

Reviews

F**2

Soddisfattissimo

Funziona perfettamente, testato con differenti materiali e la risposta è stata sempre realistica, facile da utilizzare, un display bello grande, sono molto soddisfatto dell' acquisto considerato il costo davvero esiguo. Lo consiglio!

30.03.2026

W**2

Excellent produit !

Fonctionne très bien et me permet de trouver les fuites

17.06.2026

S**R

I am buying third time

Fantastic product. I purchased third time. Good cost to performance ratio.

13.04.2025

E**N

Excelente

Excelente producto cumple su función

7.05.2026

S**N

Excellent

Excellent does exactly what it is supposed to. Easy to use. Would highly recommend

16.05.2026

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