User's Manual

8
2. Introduction
The fi gure below shows the front of the reader with all available connections on the IP 40 variant.
2.5 Connections/Displays
Antennas
connectors
USB port
Power
connector
LED
RS 485/RS 422 interface
2.5.1 Supply of power
The power is supplied via a 3-pin M8 connector or via the 9-pin Sub-D socket. The pin assignments
on the housing connector are shown in the illustration below:
Positive pole
Earth
Figure: Front end of the RRUI 4