Extech MO290


An outstanding new 8-in-1 multi-meter with Built-in IR Thermometer and so much more!

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Extech MO290: Pinless Moisture Psychrometer + IR

The MO290 is an 8-in-1 meter that combines a Pin/Pinless Moisture Meter with a built-in InfraRed Thermometer. Additional measurements include: Temperature, Humidity, Grains per Pound, Dew Point, Vapor Pressure, and Condensation Point. Complete with pin moisture probe, 9-Volt battery, and case.


  • Measure Humidity, Air Temperature (with built-in probe) plus non-contact InfraRed Temperature
  • Pinless moisture sensor allows to monitor moisture in wood and other building materials with no surface damage
  • Remote pin-type probe (MO290-P) for contact moisture readings (3ft/0.9m cable length)
  • Select from multiple wood types and measurement ranges
  • Easy to read, large dual display with backlit feature
  • Simultaneously displays % moisture of wood or material being tested and Air Temperature, IR Temperature, or Humidity
  • Pinless measurement depth to 0.75″ (19mm) below the surface
  • Non-Contact InfraRed Thermometer with 8:1 distance to spot ratio and 0.95 fixed emissivity
  • Built-in Humidity/Temperature probe measures Relative Humidity, Air Temperature plus Grains Per Pound (GPP), Dew Point (DP), and Vapor Pressure
  • Programmable high/low Moisture and Humidity alarms
  • Automatic calculation of differential Temperature (IR – DP) to determine condensation point
  • Min/Max and Data Hold, Auto Power Off\
  • Complete with battery and pouch case



Specifications                        Range

Sensor Type                                    Non-Penetrating

Pinless Moisture                              6 to 99.9 (Relative)

Pinless Depth                                  up to 0.75″ (19mm)

Pin-type Moisture (probe included) 0 to 99.9%

Max Resolution                                0.1, 0.1°F/°C

Humidity                                           0 to 100%RH

Temperature (Air)                            -20 to 170°F (-29 to 77°C)

Temperature (IR)                             -4 to 392°F (-20 to 200°C)

Vapor Pressure                                0 to 20.0kPA

Dew Point                                        -22 to 199°F (-30 to 100°C)

Mixing ratio                                      0 to 999GPP (0 to 160g/kg)

Field of View                                    8:1 Distance to Target ratio

Emissivity                                        0.95 fixed

Dimensions                                     6.5×2.8×1.5″ (165x70x38)

Weight                                            7.4oz (210g)


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