FLIR MR40™
Moisture Pen + Flashlight
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.
FLIR MR40 Features

Moisture pen + flashlight
Single-scale moisture meter and flashlight

Pocket portable
MR40 fits in your pocket to easily carry with you

Simple and reliable
All the features you need including Measurement ‘Hold’, Calibration/Pin Check, and audible indication of measured range

Durable
Drop-tested and IP rated for water resistance

Replaceable Pins
Includes two sets of pins

Warranty
Includes Limited Lifetime Warranty
FLIR MR40 Specifications
Measurements | |
---|---|
Measurement Range | 5% to 60% MC (moisture content) |
Measurement Accuracy | 5 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): http://tinyurl.com/jteb653 |
Audible Indication | 5-12%: Low Beep rate. 13-60%: Higher beep rate. More than 60%: Highest Beep rate (Display OL) |
Calibration/ Pin Check, Integrated in Cap | 16% |
Meter data | |
Work light | ~40 lumens |
Display | LCD |
Electrode pins | Integrated, Replaceable |
Measurement Principle | Electrical Resistance |
Warranty | Limited Lifetime |
Calibration cycle | N/A |
Certifications | |
Certifications | CE |
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Power system | |
---|---|
Power requirements | 2 × AAA alkaline batteries |
Battery life | 70 Hrs w/o Flashlight |
Battery status indicator | 4 Bar battery icon |
Auto Power Off (APO) | 3 minutes |
Environmental Data | |
Drop test | 3 m (9.8 ft.) |
Ingress Protection Rating | IP54 Splash Proof |
Operating temperature | -10 to 60°C (14 to 140°F) |
Physical data | |
Weight | 80g (2.8 oz) with Battery |
Dimensions (H × W × L) | 193 x 26 x 31 mm (7.6″ x 1.0″ x 1.2″) |
Material | PC-ABS w/TPE Overmold |
Color | Gray, black |