Auto Power OFF (APO)
To conserve battery energy the meter automatically switches off after a three-minute period of
inactivity. Several seconds before switching OFF, the meter beeps to alert the user. APO is
disabled while the meter is connected wirelessly to the smart device application.
Display Hold
Press the Display Hold button to freeze the displayed reading. The icon is visible on the
display when Display Hold is active. Press again to return to the normal operating mode.
Beeper ON/OFF
The beeper defaults to ON. To switch the beeper OFF, press and hold the Beeper button
until the icon disappears. Press and hold again to switch the Beeper ON. When the beeper is ON,
the audio display icon will be visible.
Pin-Mode Accuracy Test
Set the meter to Pin mode (Wood or Building materials) and then touch the electrode pins to
the contacts through the holes at the top of the cap. Expected result: Wood 17.0 to 19.0%;
Building 15.5 to 17.5%. If the reading exceeds these ranges, replace the battery and retry. If the
meter continues to read inaccurately, return the meter for service.
High and Low Alarm Limits (for use with ExView® W-Series wireless application)
The MO55W high/low alarm alerts are sent to paired iOS® and Android™ devices using the free
ExView® W-Series application. Set the high/low alarm limits per the steps below.
1. To set the High Alarm limit, long press the and buttons until the symbol H% appears
2. Use the button to adjust the left flashing digit, then press to confirm
3. Use the button to adjust the right flashing digit, then press to confirm
4. To disable the Alarm, long press the button until dashes appear
5. Repeat the above steps to program the Low Alarm limit (L%)
Alarm limit adjustment ranges:
• Pin (Wood): 6.0 to 50.0%
• Pin (Building materials): 2.0 to 33.0%
• Pinless (Wood and Building materials): 1.0 to 99.0%
Note that an error message appears (Err) when the High Limit is set </= Low Limit value
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Measurement Specifications
Power
