Thank you for the swift reply.
I have another question before having a decision, regarding the backup battery: can you please explain its role and limits? I am especially concerned about the possible power failure while the irrigation system is working.
It is 1.3 –> I ordered one last week after waiting for it to come out, but yes I did see the reference to 1.2 that should be fixed in the item details. For added comfort, specify you want a 1.3 version in your order’s note section (I did).