Hach IO9000 Instructions D'utilisation page 11

Figure 4 Wiring overview
1 Fuse (8x)
2 Relays (4x)
3
3 Digital inputs (4x)
4 Analog outputs (3x)
3
Not used
4
Use ring terminals to make connections. Ring terminals are not supplied.
5 Ground stud for shield wires
6 Analog inputs (2x)
7 Digital outputs (4x)
4
English 11