@Dpt, Eufy has talked about releasing a stand-alone camera that is battery operated, weather rated, runs on Wifi and has an SD card in it. That said, it’s been a while since they’ve released any information about it.
To get support, you’ll have to email their support team or live chat with them. This forum is more user-to-user support.
Stand Alone Eufy Cam info: New eufy Security Product naming discussion