Extech Instruments MO50 User Manual page 4

Button Descriptions
Button icon Button Name
Power ON-OFF
Material Select
Display Lock and Beeper Control
Operation
CAUTION
The electrode measurement pins are extremely sharp. Use care when handling this instru-
ment. Cover the pins with the protective cap when the instrument is not in use.
1. Carefully remove the protective/test cap to expose the electrode pins.
2. Long press the power button
audible tones, and the display switches on, when the meter powers up. If
the meter does not switch ON, please check the battery in the rear
compartment.
3. Short press the Material Select button to toggle Wood
Material modes.
4. Push the electrode pins into the material under test.
5. Observe the displayed reading in percent (%), the number of moisture
droplet icons , and listen for the beeper.
• One moisture droplet icon indicates low moisture, two drops indicate
medium moisture, and three drops indicate high moisture. Refer to the
chart on the back of the meter and in the Appendix section, below.
• The audible beeper has eight variations, faster beeping for high mois-
ture and slower beeping for low moisture.
6. Long press the power button to switch OFF the meter.
Automatic Power OFF (APO)
To conserve battery energy the meter automatically switches off after a three
(3) minute period of inactivity.
Display Lock
Press the Display Lock button
icon is visible on the display when Display Lock is active. Press the button
again to return to the normal operating mode.
#NAS100219; r. AD/98463/98469; en-US
Description
Long press to switch ON-OFF
Short press to select material
group (wood, building materials)
Short press to lock reading
Long press to enable/disable
beeper
to switch ON the meter. The meter emits
to freeze the displayed reading. The lock
and Building
3