You can use the Dreame Robot Vacuum Cleaner on several floors by moving it to each floor and creating a new map. However, the base station must remain on the floor on which the robot is being charged. You can move the robot to another floor and create a new map there, but the base station should remain on the floor on which the robot is regularly charged.

Hello, We've carried out a search using the product's EAN code (6976233677033): it does indeed appear to be Gen 2.