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Extech Instruments MO257 User Manual

Extech Instruments MO257
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MO257 V1.0 04/10
4
Auto Power Off
To conserve battery energy, the meter will enter a sleep mode after approx. 30 minutes of
inactivity. Press the power button to wake the meter.
Backlit LCD
Press the up/backlight button to switch the backlighting ON or OFF.
Specifications
Function Range Accuracy
Moisture Range 0.0 to 100.0 Relative only
Measurement Depth 0.79 to 1.57” (20 to 40mm)
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 40 to 110°F (4 to 43°C)
Operating Humidity 90%, 32-86°F (0-30°C), 75%, 86-104°F (30-40°C),
45%, 104-122°F (40-50°C)
Power Supply Three (3) 1.5V ‘AAA’ batteries
Auto Power Off (APO) After 30 minutes of inactivity
Dimensions 9.2 x 2.5 x 1.1” (235 x 63 x 28mm)
Weight 7.7oz (218g)
Moisture Comparison Table (typical)
Material Display units Moisture status
Gypsum < 30 DRY
30 - 60 RISK
> 60 WET
Cement < 25 DRY
25 - 50 RISK
> 50 WET
Wood < 50 DRY
50 - 80 RISK
> 80 WET
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Extech Instruments MO257 Specifications

General IconGeneral
BrandExtech Instruments
ModelMO257
CategoryMeasuring Instruments
LanguageEnglish

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