Ask HN: Privacy Robotic Vacuum Cleaner?

Could you please point me to any research or recommendations regarding modern privacy-okay robotic vacuum cleaners?

Ideally:

* no Internet connection necessary; should pair with the mobile app over the local network

* no video cameras or microphones (laser scanning)

* no city location awareness (no GPS or location-by-WiFi capabilities)

* otherwise modern and robust

Even the "least bad" recommendation will be very helpful, thanks!