UEi Test Instruments AQM4 - Manual (Page 9)

In the MAX/MIN/STEL/TWA modes, it
shows the corresponding readings on the
main display and the real time clock on the
lower display.
In this mode, press to switch the
displayed parameters (Fig 14).
The displayed sequence in this mode is MIN
MAX STEL TWA. Press key to return to
live readings.
"HOLD", "Manually Record", Record" and
"Recall" functions are all available when
meter is in MIN/MAX/AVG mode.
To clear the MIN/MAX/AVG since power
on, restart the meter or press for more
than 2 seconds to clear previous data and
restart.
8
NOTE:
TWA & STEL ARE FOR CO2
ONLY. MIN/MAX ARE FOR ALL
PARAMETERS