Shelly Flood Gen4 vs YoLink Water Leak Sensor 4

The YoLink Water Leak Sensor 4 wins overall with a lower price, higher owner rating, weather resistance, and longer battery life. The Shelly Flood Gen4 still leads on warranty length and connectivity breadth.

Range versus platform reach. The YoLink Water Leak Sensor 4 uses a long-range LoRa radio through a dedicated hub to cover large properties, while the Shelly Flood Gen4 trades that range for WiFi, Bluetooth, Zigbee, and Matter support across nearly any ecosystem.

The Shelly Flood Gen4 does, reaching Google Home, Alexa, Apple HomeKit, SmartThings, and Home Assistant via Matter, Zigbee, and WiFi. The YoLink Water Leak Sensor 4 works with Alexa, IFTTT, and Home Assistant only through its own hub.

The Shelly Flood Gen4 does, backed by a longer warranty than the YoLink Water Leak Sensor 4's standard coverage.

Choose it if you want the more affordable, better-reviewed, weather-resistant sensor with a longer battery life and need long-range coverage across a large property.

Pick it if you want a sensor that talks to nearly any smart home platform through Matter, Zigbee, or WiFi, plus the longer warranty.