Sper Scientific 850026 Mini Environmental Quality Meter - Manual (Page 12)

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Hold Function
Pressing Hold will freeze the
current reading on the display.
The HOLD symbol will be
displayed at the top of the
display window.
To release the Hold function,
press Hold again, the HOLD
indicator will disappear and
the current reading will be
displayed.
REC (Record) function
The REC (Record) function
will record and display the
maximum and minimum
readings.
1. Start the Record function
by pressing REC once.
The REC symbol will appear
on the display.
2. With the REC symbol on
the display: