General Tools and Instruments LTH8809DL - Manual (Page 5)

PORTS
DC 9V
Right side view
USB PORT
KEY PAD OPERATION
START
STOP
MODE SET
START
STOP
MODE
SET
-Change the setting upwards.
- / monitor by ing
the key
-S
by pressing
the NOTE need to set
the start mode as KEY start)
-Change 33%RH calibration to 75%
caibration in RH calibration mode.
-Press START & SET keys at the
same time >2 sec to start 33%
RH calibration.
-Press key >2 sec to switch Dew
Point (8808/09) & air temperature.
-Press key <1 sec to switch temp.
unit.
-Change the setting downwards.
4
-In normal measurement mode,
press this key to enter set mode
in order to change and set up.
-Saving the setting: sample rate/
sample point/ start mode/ start
time/ real time/ alarm.
Dot LED flash ( 8808 ) :
-REC LED flashes when the meter is in
the logging status.
-ALM LED flashes when temp. or RH
is exceeding threshold setting.