Water damage is one of those problems where a single sensor can save you a major repair bill on your floors, cabinets, etc. Leak sensors have been among the best values in the smart home for years, and Shelly’s new Flood S Gen4 makes it even easier to get started. It’s under $30, Matter-certifi...
Source: [9to5Mac](https://9to5mac.com/2026/09/11/homekit-weekly-shellys-flood-s-gen4-is-a-low-cost-matter-leak-sensor-for-apple-home/)