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Quick verdict
A cheap and cheerful water leak sensor. Drop it under a sink or behind the washing machine, and it will scream if it gets wet, even without smart home connectivity. For Home Assistant, it works over Bluetooth or Matter via a Hub. At this price, buy a handful and scatter them at every water point. The only real limitation is no probe cable, so it only detects water directly at the sensor location.
Standout: Affordable Wi-Fi/Bluetooth water leak detector; reaches Matter through the SwitchBot Hub 2.
Notes last checked Mar 22, 2026.
Compatibility snapshot
Home AssistantgoodReliable local integration with minor caveats (a hub, manual config, or polling). Core function works locally.
Apple HomeokayWorks, but with limits or extra setup.
Google HomeokayWorks, but with limits or extra setup.
AlexagoodWell supported, with only minor gaps.
Works offlineyes
Setupeasy
Extra hub neededno
Powerbattery
Local control facts
Home Assistant: switchbot integration, Local Push, Gold on the quality scale (home-assistant.io, checked Sep 10, 2026)
Why it stands out
budget-friendly water leak sensor with Matter upgrade path via Hub
loud built-in alarm sounds even without smart home connectivity
compact design fits under sinks, behind toilets, and near water heaters
Reasons to hesitate
Bluetooth range means you might miss alerts if your phone or server is too far away
Hub required for reliable remote notifications and Matter integration
no probe cable, so it only detects water directly under the sensor
Best for
placing under sinks, near water heaters, and in basements for early leak detection
SwitchBot users who want affordable water monitoring integrated with Home Assistant
Avoid if
you need a rope-style sensor to cover a large area, so look for probe-cable models
you want instant remote notifications without buying a Hub
Privacy and local-control notes
Reports wet/dry state over Bluetooth locally. Hub adds WiFi connectivity for Matter and remote alerts. Minimal data collected.
Home Assistant support: supported · integration path: SwitchBot / Matter.
Buying reality check
Price notes: Very affordable. Buy several to cover all the common leak points in your home.
Verified price reads: lowest seen $16.99, latest $16.99 on Sep 12, 2026.
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