Automatic Cleaning Solution Dispenser Module Fit for DREAME E30 Ultra X40 S20 S10 Pro X30 Ultra Robot Vacuum Cleaner gray.Feature: 1. Easy to Install and Use: Install this automatic cleaning solution dispenser module into the base station, then open the fit for DREAME application to activate the automatic distribution function. 2. Large capacity: The automatic cleaning solution dispenser module is easy to install, has ample capacity, can be used for a long time, and does not require frequent rep