Based on the FB group post, yes. I have not confirmed as I do not have them yet. That is why I used the words "appear" to CYA.... LOL
I am unsure because they are 2.4 Ghz and 5.8 Ghz, whereas the specs for the C8 were lower I believe (listed here: C8 antenna swap - #8 by aaiyar
There are also the ones that were mentioned here (at the bottom of this post: External Antenna - #28 by lewis.heidrick). For these two, you will want to make sure you put the correct antenna on the correct connector as they are not dual band. The 900 Mhz goes on the Zwave side.
