WTN550 USER MANUAL
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11
The screen displays the message “LO” When using the Non-
contact Body Infrared Thermometer the message Lo can show
on the screen.
The temperature analyzed is under the measuring range
selected, either less than 32°C (90°F) in Body mode or less than
0°C (32°F) in Surface mode.
This message displays in various cases - please find below a list of the main
cases.
Reasons for “LO” or “HI” message
display
Advice
Temperature reading hampered by
hair, perspiration etc.
Make sure that there is no
obstruction prior to taking a
temperature
Temperature hampered by an air
Make sure there is no air flux
as this could interfere with the
infrared system
The measuring distance is too far
Please respect the measuring
distance (between 5 to 15cm
- 2 to 5.9 in).
From high/low temperature
condition to room temperature
taking the body temperature
W aiting for 10 minutes before
