@martin-kudláček said in Another home automation project:
our din rail mounted relay - and connect it to DO or RO. Awkward, but it works.
In most of my projects i use external relays to extend the life of embedded hardware relays, so it's not that awkward. I use mostly relays with coil voltage 230 V AC with UniPi 1.1 but now with the shared COM port and neuron power suply, i'll go with coil voltage 24 V DC.