FLIR MR40 Moisture Pen + Flashlight

Small enough to carry in your pocket, IP54 splash-proof rated, and 3-meter drop tested, so it’s always ready to work when — and wherever— you are.

Categories: , SKU: MR40


The FLIR MR40 is a pocket-portable, rugged 2-pin, single-scale moisture meter with an integrated flashlight for wood and common building materials – ideal for builders, building inspectors, remodelers, moisture remediation technicians, pest control professionals, and residential roofing and flooring contractors. Providing reliable and accurate measurements offered at a highly affordable price point, MR40 is a quick and easy-to-use tool to find and quantify moisture content.

When used in combination with a thermal camera, MR40 can help confirm whether a cold spot in a thermal image is moisture, and measure the severity of the problem.


Measurement Range5% to 60% MC (moisture content)
Measurement Accuracy5 to 30% MC (Moisture Content): +/- 2%
30- 60% MC (Moisture content): Reference only
Note: For materials other than Group9/ Building Materials: plywood, drywall, and oriented strand board (OSB), download the MR40 Material Conversion Table (publication MR40-AN01):
Audible Indication5-12%: Low Beep rate. 13-60%: Higher beep rate.
More than 60%: Highest Beep rate (Display OL)
Calibration/ Pin Check, Integrated in Cap16%
Meter data
Work light~40 lumens
Electrode pinsIntegrated, Replaceable
Measurement PrincipleElectrical Resistance
WarrantyLimited Lifetime
Calibration cycleN/A


 MR40 Datasheet




There are no reviews yet.

Be the first to review “FLIR MR40”

Your email address will not be published. Required fields are marked *

Post comment