Trigger cable lowers temperatures & power consumption

[hardcore]

Perhaps I missed it, but I didn’t see an answer to the first question.

Cheers,
Bernard

I didn’t talked about what you asked because I think I mentioned in other posts that when they are without the sd cards they are back to two single 220 units and work properly.

Have you tried different SD cards? The Devialets are compatible only with the older SD cards (typically up to 2GB) and SDHC cards (typically 4GB-32GB).
If you're using a newer SDXC card (typically 64GB+) it likely won't work.

Also make sure you format your SD cards with FAT or FAT32 filesystem (not NTFS or exFAT).