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POWER SUPPLY
The meter is powered by 4pcs AAA batteries. If any of the following situations
occurred, please check the battery power, polarity and contact:
1. Brand new meter and first time using.
2. When the battery low icon appears on the LCD.
3. When you cannot turn the power on.
KEY PAD OPERATION
•
Press this key to switch the meter
ON/OFF
.
•
In the normal mode, press >1 sec to enter
SET
mode.
•
Press to switch between "normal" and "calibration"
•
In calibration, setting or recall mode, press to return to normal mode.
•
Press to switch between D.O.in% or D.O.in mg/I(ppm).
•
Press to increase the setting value in
SET
mode.
•
Press to switch between CON(us) or TDS(ppm/ppt) or Salt (ppt) unit.
•
Hold down this key more than 2 seconds to read memory value.
•
Press to save the current reading.
•
Press to decrease the setting value in
SET
mode.
•
Press to confirm the calibration or parameter setting.
•
Press to turn on/off backlight.
