Ring Alarm Flood and Freeze Sensor Review
Our verdict
If you run Ring Alarm, this $35 sensor is a must-add: it reports leaks and warns when temps approach freezing (~40°F), triggering your Ring sirens and alerts. It needs the Ring Alarm base station, so it's not for non-Ring homes.
Pros and cons
What we like
- Freeze warning at ~40°F plus leak detection
- Triggers Ring sirens and professional monitoring
- Z-Wave — reliable mesh connection
What could be better
- Requires Ring Alarm base station
- No standalone Wi-Fi mode
Full specifications
| Detection | Water contact + freeze (~40°F) |
| Connectivity | Z-Wave (Ring Alarm base required) |
| Alerts | Ring app, siren, professional monitoring |
| Battery | CR123A (long life) |
| Extras | Freeze warnings |
| Smart home | Alexa (via Ring) |
| Subscription | Optional Ring Home for monitoring |
Compare with similar
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 AmazonLast updated 2026-10-02. Price checked 2026-10-02 — confirm at the retailer.