Compatibility: Designed for seamless integration with eufy S2, enhancing performance and convenience. Hands-Free Convenience: Experience hassle-free cleaning with this automatic water refill and drainage system. Leak-Proof Protection: Multiple layers of overflow protection maintain a controlled water level to prevent spills. The pre-installed water tank operates without electrical controls, so no wiring is required. After-Sale Service: We are committed to providing excellent customer service. Our friendly support team is available 24/7 to assist with any questions or concerns. Genuine eufy Accessory: To extend the lifespan of your vacuum, always choose genuine eufy accessories.