According to the literature, because you already have a 9200 on the DPP, adding the 4100 will work. Apparently, the 9200 runs the DPP.
Now my question is, will a 4100 on its own work with a DPP. I just bought one, installed it at home, and it fails the check switch. I'm wondering if that is normal for JUST a 4100 on the DPP, or if its a faulty DPP.