Migrating Veritas R8 to Alarm Panel Pro

Hi, all.

Going to give this product a shot here in my overarching attempt to make this house smarter.

This isn’t so much a question (though there are a couple) of can it be done, but just ensuring I have everything I need. I have the panel showing up today, but probable I’ll need some additional pieces.

I currently have eight zones wired up. That piece is straight forward enough in and of itself.

1-Main door contact
2-Pyronix KX15DQ PIR
3-Pyronix KX15DQ
4-Pyronix KX15DQ in series
5-Pyronix KX15DQ
6-Texecom Premier Elite DT PIR tied together with another motion detector I’ve not ID’d
7-Door contacts in series
8-Window contacts in series

The old keypad will be removed in its entirety in favor of a tablet of some description to take its place. My hope is to use the existing wiring to connect to a USB cable for power to said tablet.

I have two sounders w/ strobe, don’t have the exact model to hand, one of which I believe was never connected, and one internal 16-ohm speaker that’s been temporarily removed due to painting the wall it was on. That speaker could be replaced with something else more suitable.

On the Veritas board, I also have the aux connected, which I believe is the common power to the PIRs. The TAMP connection is jumped.

The Texecom PIR looks to have additional wiring done, but haven’t gotten close enough to see what’s what.

I may use the old battery as a backup.

One question I have does revolve around the connectivity for the zones. While the R8 panel has a dedicated pair of connections for each zone, the Konnected has a shared ground/negative for two zones. Is there a best practice here? I’ve not confirmed any existing resistor config on the PIRs and will remove as suggested. I’m assuming as well that this may be out of date as the pro is billed as 12-zones, yet the documentation says “Each can monitor up to 6 sensors.” Am I correct in saying that it’s just bad wording in that each zone can monitor up to six sensors (in series) in terms of electrical load?

I’ve not pulled the wiring apart yet to confirm whether I could split the PIRs/contacts out. I may do so as having that individually would be better. But the installers did some stupid things when they built this house so not sure what’s what yet. Appreciate I’ll need add-on boards if that’s the case and no issues there.