Prokit's Industries MT-4018 - Manual (Page 8)

is less than 30 dB or is higher than 120 dB.
2. To set range manually
If it is necessary to set range manually, press
button Auto/Manu, symbol MANUAL displays. You
can press button Up or Down to choose the proper
range. The range is displayed on top of the screen.
When LCD appears UNDER symbol, it indicates
that the range is high, you need to press button
Down
to set lower range until no UNDER symbol.
When LCD appears OVER symbol, it indicates that
the range is low, you need to press button Up to
set higher range until no OVER symbol. If you want
to enter auto-range measurement, press button
Auto/Manu
again.
3. To set power off
When meter is working, pressing button On/Off will
get shutdown immediately.
4. Automatic shutdown
When meter is working and stop to press button for
two minutes, shutdown will occurs automatically.