Extech MO290 Pinless Moisture Psychrometer + IR

Regular price $947.52

Extech Penetrating and Non-penetrating moisture meter, Psychrometer and Infrared Thermometer in one meter

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/GPK
  • Dew Point
  • Vapor Pressure
  • Condensation Point

Comes complete with a pin moisture probe, 9-Volt battery, and case.


  • Measure Humidity, Air Temperature (with built-in probe) plus non-contact InfraRed Temperature
  • A pinless moisture sensor allows monitoring of the 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
  • The 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 

Spec Sheet 

User Manual


  • Hammer Probe