Dreame F9. The Dreame F9 uses this optical sensor to detect doors and passageways. You should use one of 4 suction modes when vacuuming.
The F9 can be seen as a kind of upgrade model of the Mi Robot 1C which is now appearing under a new flag. Dreame F9 vs D9. Dreame V9P Cordless Vacuum Cleaner.
The Dreame F9 uses this optical sensor to detect doors and passageways.
Please note optical sensors are devices that use light to detect objects and should not be confused with cameras. The Dreame F9 uses this optical sensor to detect doors and passageways. There are a few main differences. Its NIDEC digital motor produces a suction of up to 2500 Pa and can be set to 4 different suction levels.