Eve Water Guard vs Shelly Flood

The Eve Water Guard comes out ahead overall thanks to its higher rating, weather resistance, wider connectivity, and on-device siren and light. The Shelly Flood remains a smart pick for buyers focused on price, warranty length, and broader smart home integrations.

Power and platform. The Eve Water Guard is a wired, HomeKit and Thread device with an extendable sensing cable and local alarm, while the Shelly Flood is a battery-powered WiFi sensor that plugs into Google Home, Alexa, SmartThings, and Home Assistant but skips HomeKit entirely.

The Shelly Flood does. It supports Google Home, Alexa, Home Assistant, and SmartThings, and pairs water-leak detection with a built-in temperature sensor and freeze alerts, categories where the Eve Water Guard offers less breadth.

Only the Eve Water Guard does. It includes a 100 dB on-device siren and an alert light, while the Shelly Flood relies entirely on app and hub notifications with no local sound or light.

Choose it if you run Apple HomeKit or Thread, want a wired sensor with no batteries to replace, and value the sensing cable's ability to monitor a whole appliance run plus a loud local alarm.

Pick it if you want the more affordable option with a longer warranty, need Google Home, Alexa, or SmartThings support, or want a single sensor that also tracks temperature and freeze risk.