VT-
M2M-Ruban
22
/ 27
3.5
Operation
Notice
3.5.1
Change
SIM
Card
Push
the
small
button
on
the
left
of
SIM
Card
Holder,
and
install
the
SIM
card
to
the
holder.
Then
push
the
holder
into
the
Slot.
3.5.2
Power
Supply
Please
make
sure
using
adapter
in
the
accessory,
or
the
power
is
not
reversed
when
powered
by
other
adapter.