6. Battery
1. To replace the battery, make sure the device is switched off.
2. Open the battery compartment at the back using an appropriate
screwdriver.
3. Take out the old battery and replace with a new and identical 9 V
battery following the polarity markings inside the compartment.
4. Close the battery compartment.
Warning: Do not puncture batteries or throw them in fire as they
may explode. Do not attempt to recharge non-rechargeable
batteries (alkaline). Dispose of batteries in accordance with local
regulations. Keep batteries away from children.
7. Operation
7.1 Basic Operation
1. Press the on-off button for 1 second to switch on the meter.
2. Briefly press the backlight button to switch the backlight on or off.
3. Press the A/C weighing button to select the A or C weighing frequency.
4. Press the fast/slow button to select the fast (1 sample/125 ms) or slow
(1 sample/1 s) weighing mode.
5. Press the range level button to select the range level.
6. Aim the microphone to the sound source at a distance of 1 to 1.5 m.
The sound level appears on the display.
7. Briefly press the data hold button to freeze the reading on the display.
Press again to unfreeze.
8. Press the MIN/MAX button to display the recorded maximum value,
briefly press to display the recorded minimum value, press again to
exit the function.
9. Press the on-off button for 3 seconds to switch off the meter.
7.2 Setting Date and Time
1. To enter the date and time setting mode, hold the setting button
pressed while switching on the meter.
2. Set the time and date with the up/down button, go to the next item
with the setting button.
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