Roborock 9.01.4082 dirty water tank, dock spare part

The Roborock 9.01.4082 is a dock water tank; according to the maker's description it is the dirty water tank for the tank version of the dock (Onyx6). It collects the dirty water left after the mop cloths are washed. The supplier does not list compatible robot models, so check the code 9.01.4082 against your dock's parts list before ordering.