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MO55-en-GB_V1.1 10/18
5
Display Lock
Press the Display Lock button to freeze the displayed reading. The icon is visible on the
display when Display Lock 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 Display Lock/Audible
Beeper button until the icon disappears. When the beeper is active the audio display icon
will be visible.
Pin-Mode Self-Test
Turn on the meter and 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 Protective/Test cap.
Expected result: Wood 17.0 to 19.0%; Building 15.5 to 17.5%
When the meter reads outside of these ranges please replace the battery and retry. If the meter
continues to read outside of these ranges, the meter should be returned for service.
Pinless Mode Comparison Measurements
While holding the meter against a known dry surface, turn on the meter. Press the Mode (M)
button to step to the preferred setting, blinking wood or blinking building material icon. The
meter will now read 0% (relative/offset reading). Now move the meter to other areas to test to
find higher levels of moisture.
Maintenance
Battery Replacement
When the battery status icon appears empty or flashing, replace the battery.
1. Remove the rear battery compartment cover by pushing the compartment latch.
2. Replace the 9V battery observing correct polarity.
3. Replace the compartment door securely.
4. Dispose of battery responsibly and within applicable legal regulations.
Never dispose of used batteries or rechargeable batteries in household waste.
As consumers, users are legally required to take used batteries to appropriate collection sites, the
retail store where the batteries were purchased, or wherever batteries are sold.
Disposal: Do not dispose of this instrument in household waste. The user is obligated to take end-of-
life devices to a designated collection point for the disposal of electrical and electronic equipment.
Care and Cleaning
When the instrument is not in use please keep the protective cap in place.
Store the meter in a stable, dust-free environment; out of direct sunlight.
Remove the battery from the instrument if the meter is to be stored for long periods or if
the battery power symbol appears empty (or flashing) on the display.
To clean the meter case, wipe with a damp cloth do not use solvents or abrasives.
To clean the pins, wipe carefully with a damp cloth to remove residue; allow to dry well.
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