Table 6.
Module Usage/Location Power Interfaces Description
N4
SA - MMI
Ethernet
USB
Serial
Provides user interface
the A4M with Ethernet.
A4M
N4
Meter Pulse
Input
Ethernet
to 6 dual channel product
meter pulse inputs, pulse
inputs not used for product
inputs.
A4B
Meter Pulse
Input
Ethernet
and SA models
A4I
mounted in –
in separate
enclosure
Additive meter
pulse input
Digital Input
Reader
in front cover ofN4
or SA – MMI
or Mounted in
separate enclosure
Proximity card reader for
access control