4. Wiring Sprinkler Valves
To connect a sprinkler valve, insert one wire to the COM (common) terminal, and the other wire to any of the station
terminals (1-8). The COM terminal has two ports – they are internally connected so either port is fine. To connect
multiple valves, one wire from each valve should come together and go to the COM terminal; and the other wire from
each valve goes to an individual station terminal. See the diagram below.
5. Zone Expansion Board
To connect a zone expansion board, use the extension cable you received to
link the OSPi’s OU T port to the expansion board’s IN port. The connector on
the cable is polarized (with a bump on the top), so there is only one way to
plug it.
If you have multiple expansion boards, you can daisy chain them in the same
way, by following the OUT -> IN links.
When using zone expansion boards, the sprinkler valves are wired the same
way as before: one wire from each valve should come together and go to the
COM terminal on the OSPi; and the other wire from each valve goes to an individual station terminal.
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