Leak Sensors
A $30 sensor can prevent a $10,000 flood. We compare detection speed, alert options, and hub requirements.
Govee WiFi Water Leak Detector (3-Pack)
The Govee 3-pack is the no-brainer starter kit: direct 2.4GHz Wi-Fi means no hub, the 100dB alarm screams even if your internet is down, and app/email alerts reach your phone. At ~$13 per sensor, cover every risk spot.
All leak sensors compared
Govee WiFi Water Leak Detector (3-Pack)
Three Wi-Fi leak sensors with a 100dB siren — no hub, no subscription.
Best for: Best value
Direct Wi-Fi — no hub required
100dB alarm works without internet
2.4GHz Wi-Fi only
Check price at Govee via ImpactYoLink Water Leak Sensor Starter Kit
Quarter-mile LoRa range that alerts even when the internet is down.
Best for: Best range
~1/4-mile LoRa range through concrete/steel
Alerts work during internet outages
Hub required
Check price at AmazonHoneywell Home Wi-Fi Water Leak Sensor
Trusted-brand sensor with temperature and humidity monitoring built in.
Temperature + humidity monitoring
4-foot remote sensor cable
Pricier per sensor than Govee
Check price at AmazonRing Alarm Flood and Freeze Sensor
Leak plus freeze warnings, inside the Ring Alarm system you may already own.
Freeze warning at ~40°F plus leak detection
Triggers Ring sirens and professional monitoring
Requires Ring Alarm base station
Check price at AmazonPhyn Plus Smart Water Assistant
Whole-home protection that shuts off your water automatically.
Best for: Best whole-home
Automatic whole-house water shutoff
~97% leak detection accuracy
$700 + plumber installation
Check price at AmazonSide-by-side specs
| Spec | Govee WiFi Water Leak Detector (3-Pack) | YoLink Water Leak Sensor Starter Kit | Honeywell Home Wi-Fi Water Leak Sensor | Ring Alarm Flood and Freeze Sensor | Phyn Plus Smart Water Assistant |
|---|---|---|---|---|---|
| Price | $39.99 | $49.99 | $54.99 | $35.00 | $699.99 |
| Detection | Water contact probes | Water contact probes | Water contact + 4-ft cable probe | Water contact + freeze (~40°F) | Whole-home pressure-wave monitoring |
| Connectivity | 2.4GHz Wi-Fi (no hub) | LoRa (hub required) | Wi-Fi (no hub) | Z-Wave (Ring Alarm base required) | Wi-Fi (hardwired power) |
| Alerts | 100dB siren, app push, email | App, SMS, email, siren (via hub) | App push, email | Ring app, siren, professional monitoring | App push, email; automatic shutoff |
| Battery | CR2 (~2 years) | AAA (~5 years) | ~3 years | CR123A (long life) | Hardwired |
| Extras | None — sensor only | Optional automatic valve controller | Temperature and humidity sensing | Freeze warnings | Automatic main-line shutoff valve |
| Smart home | Alexa, Google Assistant (via Govee app) | Alexa, Google, IFTTT | Alexa, Google Assistant | Alexa (via Ring) | Alexa, Google Assistant |
| Subscription | Not required | Not required | Not required | Optional Ring Home for monitoring | Not required |
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Last updated 2026-10-02.