Extech Instruments 480836 - Switching the Alarm Function on or off; Setting the Audible Sound Function off; Setting the Auto Power off Function off

480836 V5.0 8/09
13
4-5-4 Switching the alarm function on or off
ALARM
ALM ALM
1. Press ALARM key for 2 seconds to switch the alarm function on or off. The “ALM”
and “
” symbols in the display indicates that the alarm function is on.
2. When the alarm function is on, the display will show “▲” if the instantaneous
measured value exceed the limit value.
4-5-5 Setting the audible sound function off
When the meter is normally turned on, the audible sound function is on.
1. Press
key to turn off the meter.
2. Press and hold MAX/AVG key and turn on the meter again to disable the audible
sound, the “
” symbol will disappear from the display.
4-5-6 Setting the auto power off function off
READ
When the meter is normally turned on, the auto power off function is on.
1. Press
key to turn off the meter.
2. Press and hold READ key and turn on the meter again to disable the auto power
off function; the “
” symbol will disappear from the display.