Owner`s manual

2
8 channel 12 bit A/D converter, 8 channel control relay,
16 channel switch or optically isolated inputs, 4 EIA-232
serial I/O ports, 4 EIA-232/422 I/O ports, 4 EIA-485/422
I/O ports, 4 current loop ports, 16 MB memory module
and a programmable control module.