Extech MO257: Pinless Moisture Meter - EXMO257
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Extech MO257: Pinless Moisture Meter - EXMO257

Take pinless (non-invasive) Moisture measurements on wood and building materials without damaging the surface with the depth of approx <0.78" (20mm) with Extech's MO257 Moisture Meter. The ball moisture sensor provides smooth gliding on hard or delicate surfaces. Easy-to-operate with automatic calibration of the meter when powered on. Large backlit triple LCD displays moisture reading and Max and Min readings. User can adjust two alarm levels where it will show visual alert with flashing “RISK” or “WET” indicators with beeper alert. Ideal for building restoration projects and applications where moisture detection on floors, tiles and under carpets is critical. A must have tool for analyzing the after-effects of water leakage behind walls and in ceilings and also measuring moisture content on a non-flat surface.

  • $241.99
Market price: $259.99, you save $18.00
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  • Weight
    2 lbs
  • SKU

Extech MO257: Pinless Moisture Meter - EXMO257

  • Relative pinless moisture reading for non-invasive measurement from 0.0 to 100.0 with 0.1 resolution
  • Multifunction backlit triple LCD display
  • Pinless measurement depth from 0.78" (20mm) to 1.6" (40mm) below the surface
  • High frequency sensing technology
  • Automatic Data Hold
  • Two adjustable alarm levels with audible beeper and visual (flashing "RISK" or "WET") indicators
  • Automatic calibration (in dry air) when meter is powered on
  • Low battery indication, Auto Power off
  • Complete with 3 AA batteries and pouch

Moisture Range
0.0 to 100.0
Relative only
Measurement Depth
20 to 40mm (0.79 to 1.57")
Display type
Backlit LCD
Display digits
Three (3) numeric displays; each displaying from 0.0 to 100.0
Display icons
HOLD, DRY, RISK, WET, MIN, MAX and low battery icon
Operating Temperature
4 to 43°C (40 to 110°F)
Operating Humidity
90%, 0-30°C (32-86°F), 75%, 30-40°C (86-104°F), 45%, 40-50°C (104-122°F)
Power Supply
Three (3) 1.5V 'AAA' batteries
Auto Power Off (APO)
After 30 minutes of inactivity
235 x 63 x 28mm (9.2 x 2.5 x 1.1")
218g (7.7oz)
  • Manufacturer
    Extech Instruments
  • Dimensions
    235 x 63 x 28mm (9.2 x 2.5 x 1.1")
  • Weight
    218g (7.7oz)
  • Power Source
    Three (3) 1.5V 'AAA' batteries
  • Warranty
    1 year Limited Warranty

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