Compatible Models： Silver Ion Module Replacement compatible with Roborock S7maxv Ultra / S7 Pro Ultra / Q Revo / S8 / S8 Pro Ultra / S8+ / S8 Plus Efficient Cleaning Vacuum Cleaner. Improve Cleaning Effect: Slow-release silver ion module, will continue to release silver ions into the water to inhibit impurities up to 99.9%. Recycled Cleaning Design： As cleaning proceeds, silver ions also continue to transfer to the floor and waste water tank, providing peace of mind during whole-house cleaning, fresh water storage, mop washing and waste water recycling. Easy to Install： Remove the silver ion module in the clean water box. Then load a new silver ion module and press it in place. Recommended tp replace in 12 months to ensure cleaning preformance. Long-life Service: The Silver Ion Modules have a longer life cycle and better cleaning effect, which protects the robot from excessive wear and reduces the service life. Any quality problem, contact us any time. Silver Ion Module for Roborock S7maxv Ultra / S7 Pro Ultra/Q Revo / S8+/S8/S8 Pro Ultra /S8 Plus/G10S Pro / P10 /G10S Pure G20 Vacuum Cleaner - Replacement Accessories Parts - 4Pcs