Measurement Operation
Turn on the instrument by pressing power on/off button.
Short press button ”RANGE” and select suitable measurement range based on
no ”UNDER” or “OVER” display on LCD.
Select ‘dBA’ for general noise sound level and ‘dBC’ for measuring sound level of
acoustic material.
Hold the instrument in hand or fix it on tripod, take measure at a distance of 1~1.5
meters between microphone and source.
Data Hold
Press hold button to freeze the readings and “HOLD” symbol displayed on LCD. Press
hold button again to return normal measurement.
MAX/MIN reading
Press MAX/MIN button for the first time, the instrument will enter Max tracking mode,
the tracked max reading will display on the LCD.
Press MAX/MIN button for the second time, the instrument will enter Min tracking
mode, the tracked min reading will display on the LCD.
Press MAX/MIN button for the third time, the current reading will display on the LCD.
Bluetooth communication
Long press Bluetooth button to activate Bluetooth function, it communicates after
connect with the software. The instrument can transmit measured datas and instrument
status to software and the software can control the instrument.
The instrument will automatically turn off in order to lengthen the battery working life.
When symbol appears on the LCD, please replace the old battery with new ones.
Open the battery compartment with a suitable screwdriver.
Replace 9V battery.
Replace the battery compartment again.
Meterbox Pro Operation Download Meterbox Pro APP to the smartphone before
using the Bluetooth communication function. Meterbox Pro APP is compatible with
instruments with Bluetooth: Laser Distance Meters, Multimeters Clamp Meters,
Multifunction Insulation Tester, Environment Meter etc.
The Meterbox Pro for Environment Meter detailed introduction please look at the help files
in GUIDE which is in the Environment Meter interface of Meterbox Pro.
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