Answer of your leaving message
This is the final feedback before I disarm and store away these two AR3S. Please forward this to your product management.
The Atom AR3S do not support 5GHz WLAN. In my case this turns into a showstopper, because:
I can not provide LAN cable internet to the location where the cam is mounted.
I can not use the 2.4GHz WLAN because streaming on this band does interfer with about 20 other WLANs at my location.
Including an multi band WiFi for 2.4 and 5 GHz would not cost much but would take a big burden regarding connectivity from the owner.

by Customer

Dear Customer, thank you for taking time to share the experience and needs. We have shared this voice of customer among groups inside. It is our pity that the product could not support 5G only now. Thank you for the inputs and voices again.