7
OPERATION INSTRUCTION
Inaccurate measurement may result from the following:
When the battery JUDS out: at this time, the icon will continuously appear on LCD to remind
you to replace the battery.
When the measmed distance is out of the specified range: the effective range is 2'~53' (0.6-
~16m).
When the calculated remit is out of the specified range: at this time. an error message "Err"
will be displayed on the lower line ofthe screen.
When addition of different parameters (e.g. length plus area), the "+" will be ignored and the
screen will keep the same read as the unit was operated before.
When another ultrasonic source or high frequency noise is nearby: leave or shut down the
noise resource when taking measurement.
When bani.ers appear between the tool and the measured surface.
When the measured surface is not smooth: the measured surface should be smooth, hard
and of homogeneity.
When the measuring enviromnent is not good: the temperature and humidity will affect the
accuracy of measurement, and take measurement Wl.der enviromnent of no wind, and
temperature of the unit should be same 'With temperature of the circlDllStance, especially for
long distance measuring (between 40' to 53'/ 12m to 16m), the relative humidity should be above
480/0, and the size of measured surface should be at least 10ft. by 10ft/.3m by 3m.
When measuring. ultrasonic sensor aperture should straightly face to the measured surface.
Cautions
Handle with care and do not let the tool dr!'P
down.
Do not disassemble the tool to avoid failure.
Keep the tool dry and clean
Store the tool in the case when not in use.
Avoid dnsl and water, which may stain the lens.
Check battery regularly in case of its deterioration.
Remove the battery when not in use for an extended period of time.
WARRANTY
The product is warranted to be free from defects in materials and workmanship for a period of
one year from the date of purchase.
