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the adapter (3.5φ) into the DC 9V connector on
the side panel.
7. OPERATING PROCEDURE
① Power on the meter.
② Press ‘LEVEL’ button to select desired level, base on
‘UNDER’ or ‘OVER’ do not appear on LCD.
③ Select ‘dBA’ for general noise sound level and ‘dBC’ for
measuring sound level of acoustic material.
④ Select ‘FAST’ for instant sound and ‘SLOW’ for average
sound level.
⑤ Select ‘MAX/MIN’ button for measuring maximum and
minimum noise level.
⑥ Hold the instrument comfortable in hand or fix on tripod
and measure sound level at a distance of 1~1.5 meter.
8. NOTICE
i. Do not store or operate the instrument at
high temperature and high
humidity environment.
ii. When not in use for long time, please take
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