Arduino-based relay actuation

Using an additional device, the aquarium control can actuate a set of relays.

One such device is the Controllino from Boot & Work Corp, S.L..

According to their website, the Controllino is an industry-grade PLC based on open source software. It is not affiliated to Arduino and is a derivative product. Tech support for Controllino needs to be directed to the above mentioned manufacturer.

Note: This is a simple box using table syntax.