Wireless mesh networks consist of access points that can be wirelessly connected to each other without needing to be hardwired to your network. Though it’s recommended to only use mesh networks to supplement a wired network, they’re particularly useful in environments where running a cable isn’t viable.  Unifi APs can be wirelessly meshed together as long as at least one AP is directly connected to your network. Ubiquiti mentions two models specifically designed for wireless meshing: FlexHD  BeaconHD UAP-AC-MESH UAP-AC-MESH-PRO UAC-AC-PRO