​FLIR Systems, Inc. designs, develops, manufactures, markets, and distributes technologies that enhance perception and awareness. 

FLIR bring innovative sensing solutions into daily life through their thermal imaging systems, visible-light imaging systems, locator systems, measurement and diagnostic systems, and advanced threat detection systems. 

Today FLIR advanced systems and components are used for a wide variety of thermal imaging, situational awareness, and security applications, including airborne and ground-based surveillance, condition monitoring, navigation, recreation, research and development, manufacturing process control, search and rescue, drug interdiction, transportation safety and efficiency, border and maritime patrol, environmental monitoring, and chemical, biological, radiological, nuclear, and explosives threat detection.

About FLIR


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.


Easy to use
Equipped with a clear LCD display, a simple On/Off button with 'Auto Power Off', replaceable pins, and an audible indication of measured range, the MR40 is a simple and effective tool for reliable measurements.

Convenient, portable, rugged design
The MR40 is 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.

Reliable and accurate measurements
The MR40 has all the essential features you need to quickly verify moisture and determine the severity of the problem including a measurement 'hold' function and calibration/pin check integrated in the cap.

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

Drop-tested and IP rated for water resistance

Replaceable Pins
Includes two sets of pins

Includes Limited Lifetime Warranty

Additional Info


Auto Power Off (APO): 3 minutes
Dimensions (H x W x L): 193 x 26 x 31 mm (7.6" x 1.0" x 1.2")
Electrode Pins: Integrated, Replaceable (4 pins included)
Material: PC-ABS w/TPE Overmold
Packaging Size: 24.5 cm x 8.5 cm x 6.5 cm (9.7 in. x 3.4 in. x 2.5 in.)
Warranty: Limited lifetime
Flashlight: ~40 lumens

Compliance & Certifications
Certifications: CE

Drop test: 3 m (9.8 ft.)
IP Rating: IP54 Splash Proof
Operating Temperature: -10 to 60°C (14 to 140°F)

Imaging & Optical
Display: LCD

Measurement & Analysis
Audible Indication: 5 to 12%: Low Beep rate. 13 to 60%: Higher beep rate.More than 60%: Highest Beep rate (Display OL)
Calibration Cycle: N/A
Calibration-Pin Check Integrated in Cap: 0.16
Measurement Accuracy: 5 to 30% MC
(Moisture Content): +/- 2%30 to 60% MC
(Moisture Content): Reference only
Note: For materials other than Group 9/Building Materials: plywood, drywall, and oriented strand board (OSB), download the MR40 Material Conversion Table (publication MR40-AN01): http://tinyurl.com/jteb653
Measurement Principle: Electrical Resistance
Measurement Range: 5% to 60% MC (Moisture Content)

Battery life: 70 Hrs W/O Flashlight
Battery status indicator: 4 Bar battery icon
Battery type: 2 × AAA alkaline batteries (included)

Product Enquiry

Captcha Code

Click the image to see another captcha.