Automatic Cleaning Solution Dispenser Module, Large Capacity Auto-Refill for Robot Vacuum E30 X40 0, Self-Cleaning System Accessory gray.Easy to Install and Use: Install this automatic cleaning solution dispenser module into the base station, then open the fit for application to activate the automatic distribution function. Large capacity: The automatic cleaning solution dispenser module is easy to install, has ample capacity, can be used for a time, and does not require frequent replenis