DMS-4400
5
6. MAX/MIN hold button
6.1 Press the key to activate the function. The “MAX”
symbol appears on the display and the instrument
will show the Maximum value measured and will
automatically update itself when a greater value is
measured.
6.2 Press the key again and the “MIN” symbol
appears on the display and the instrument will
show the Minimum value measured and will
automatically update itself when a lower value is
measured.
6.3 The MAX/MIN function will be disabled if the
MAX/MIN button is pressed for more than 1
second or if the meter is turned off.
7. Backlight button
Press the button to enable the display backlight
for easy readings in dark environments. Press
more than 1 second to disable backlight or wait
and it will automatically turn OFF after 15
seconds.
8. Power button
.
Press key for 1sec to turn the sound level meter
ON or OFF. The unit will power off automatically
after 5 minutes of idle time.
9. Microphone
1/2 inch Electret Condenser microphone.
10. Battery cover
