Not to take away from this device, I think it’s pretty neat. But you can run tailscale on anything, even Apple TVs. If you have a Unifi network odds are that you have at least one spare computing device that can run tailscale.
Problem is that I think my Apple TV goes into some sort of deep idle mode where tailscale stops working. So it’s been effectively useless for me when I travel.
You can create a subnet router on tailscale and access any device on your local network, regardless of them having tailscale installed