32
2.2.6. AUTOMATIC SLEEP MODE
When the device is started up, it operates for 10 minutes, then automatically switches itself to sleep
mode in order to save the batteries.
To report that the automatic power off function is active, the orange Auto Power Off indicator is lit.
> 90 V
AC
< 264 V
AC
50 / 60 Hz
The green
On
indicator remains on but its brightness varies to indicate
that the batteries are OK.
Auto Power Off
P
It is possible to override automatic power off. This is done by switching the device on by turning the switch
to one of the measurement positions and at the same time pressing the Auto Power Off button for more
than 2 seconds. The orange Auto Power Off indicator remains off.
P
OFF
> 2s
2.3. MAINS ADAPTER (OPTION)
For long‑duration measurements, it is possible to connect the electronic unit to line power.
Withdraw the protection from the type B micro‑USB connector, then connect the lead. You can use any
mains/micro‑USB adapter that delivers 100 mA or more.
Auto Power Off
On
OL
P
While the external power supply is present, automatic power off is disabled. But if the supply is cut off,
the batteries take over and automatic power off acts at the end of 10 minutes.
