| Introduction to the Wallbox eM4 Twin
18
Communication between a Controller and a backend via LTE
Each Controller wallbox comes with an LTE USB stick that can be fitted with the SIM card of a backend operator
and used in the wallbox. This process is described starting on page 34.
In the reev ready variants, the SIM card for communication with the reev backend is already pre-installed in the
LTE USB stick in the Controller.
LTE communication with the backend must be set up in the
ABL Configuration App
(see page 38 onwards).
Communication with a backend via LTE
LTE
1
2
3
The Wallbox eM4 Twin Controller
1
communicates
via the LTE USB stick with an LTE receiver
2
,
which establishes the connection to the selected
backend
3
.
Communication between a Controller and a backend via LAN
The Controller can communicate with an Internet-connected network via its LAN interface.
The connection is made via one Ethernet cable (Cat5 or better) per wallbox, which is routed into the wallbox via
the supply cable area.
Communication via LAN must be set up in the
ABL Configuration App
Communication with a backend via LAN
1
2
3
4
The Wallbox eM4 Twin Controller
1
is connected
by cable to a LAN network
2
, which establishes
communication with the selected backend
4
via the
Internet
3
.
Communication between a Controller and a backend via WLAN
The Controller can communicate with an Internet-connected network via its WLAN interface.
Communication via WLAN must be set up in the
ABL Configuration App
(see page 38 onwards).
Communication with a backend via a WLAN
network
1
2
3
4
The Wallbox eM4 Twin Controller
1
is connected
wirelessly to a WLAN network
2
, which establish-
es communication with the selected backend
4
via
the Internet
3
.