What's the difference between these two? Descriptions and images across the web are inconsistent and thus confusing.
I've been told the 520639 is just a more powerful version of 522104 however I haven't seen an image of the 520639 with the protocol adapter other than Pentair site which has the exact same photo for both products. What's more is the supposedly more powerful 520639 is cheaper than the 522104 which makes no sense.
It's Saturday so Pentair is closed so I turn to you friendly experts.
Thx in advance.
I've been told the 520639 is just a more powerful version of 522104 however I haven't seen an image of the 520639 with the protocol adapter other than Pentair site which has the exact same photo for both products. What's more is the supposedly more powerful 520639 is cheaper than the 522104 which makes no sense.
It's Saturday so Pentair is closed so I turn to you friendly experts.
Thx in advance.
