EXTECH Instruments MO280 Pinless Moisture Meter
EXTECH Instruments MO280 Pinless Moisture Meter


The Extech MO280 needle-free moisture meter provides non-invasive measurement of moisture in wood and other construction materials with virtually no surface damage. This needleless meter uses electromagnetic technology to quickly display moisture levels. The LCD screen displays the average relative humidity. 0.75 inches (22 mm) below the surface.

Easy-to-read LCD screen

The LCD screen of the MO280 displays the humidity reading, the selected material group, the low battery icon, and the data storage icon (if enabled).

easy to use

Simply press the hygrometer against a smooth, flat surface, the sensor side of the meter touches the material to be measured, and wait for the screen to rest. Note the value on the LCD screen.

Versatile and versatile

This needle-free meter measures and displays relative humidity on wood and building products, behind tile, various flooring or wall coverings, and canvas/fabric and paper products.

Maintain the integrity of the test material

The non-invasive, needle-free MO280 transmits and receives low-energy electromagnetic signals through the material under test for moisture measurements.

easy to use

Data is frozen in the displayed readings to allow time to save data, and a low battery indicator lets you know when the battery needs to be replaced.

low maintenance

MO280 is an automatic calibrator that performs its own internal tests; No user calibration is required.


  • Non-invasive metering for moisture monitoring of wood and other building materials (without concrete)
  • Choose from 10 woods and bands
  • Measured at a depth of 0.75 inches below the surface
  • The LCD screen displays the moisture content of the wood or material being tested
  • Automatic internal inspection and calibration

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