I replaced both of mine, basically moved my antenna mod C7 antennas to my C8 Pro. Here is the recommended Zigbee one:https://www.l-com.com/wireless-antenna-24-ghz-5-dbi-rubber-duck-antenna-rp-sma-plug-connector
And be careful with the higher gain Zwave antenna. I had originally had the higher gain one on my C7 and when I migrated to the C8 Pro and moved antennas too I had inclusion and exclusion issues. See this post:
I wanted to chime in here with a discovery I made this past weekend. Long story short I migrated a C7 with the antenna mod to a C8 Pro earlier this year. On the C7 I was using the L-com 5 DB Rubber Duck antenna that was recommended in the mod post. When I setup the C8 Pro I used this same antenna because of how I have my hub mounted on the wall, I wanted the antennas straight up vs on the side. The stock antennas don't bend.
All was well with the zwave migration: all devices worked well and …
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