Updated June 2026
Data from Amazon and official Shelly and YoLink sites.
2026 verdict
Between YoLink Water Leak Sensor 4 and Shelly Flood, YoLink Water Leak Sensor 4 is the better overall pick in 2026, leading on price, rating, and weather resistance. The comparison tilts its way because of price, rating, and weather resistance, with battery life and alerts keeping it in front. Shelly Flood is still relevant if you care most about integrations, but YoLink Water Leak Sensor 4 is the stronger recommendation overall. That is enough to make YoLink Water Leak Sensor 4 the better pick for most buyers.
| Feature | Shelly Flood | YoLink Water Leak Sensor 4 | Winner |
|---|---|---|---|
| Price | $24.99 | $23.99 | YoLink Water Leak Sensor 4 |
| Rating | 3.8 | 4.8 | YoLink Water Leak Sensor 4 |
| Weather Resistance | NO | IP66 | YoLink Water Leak Sensor 4 |
| Battery Life | 1.5 years | 5 years | YoLink Water Leak Sensor 4 |
| Integrations | Google Home, Alexa, Samsung SmartThings, Home Assistant | Alexa, Home Assistant, IFTTT | Shelly Flood |
| Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery Alerts | YoLink Water Leak Sensor 4 |
| On Device Alert Sound | NO | YES | YoLink Water Leak Sensor 4 |
| On Device Alert Light | NO | YES | YoLink Water Leak Sensor 4 |
| Warranty | 2 years | 2 years | Tie |
| Connectivity | 2.4 GHz WiFi | Other | Tie |
| Sensors | Water Leak, Temperature | Water Leak, Temperature | Tie |
$24.99
- + Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant
- - Price: $24.99 vs $23.99
- - Rating: 3.8 vs 4.8
Winner
$23.99
- + Price: $23.99
- + Rating: 4.8
- + Weather Resistance: IP66
- - Integrations: Alexa, Home Assistant, IFTTT vs Google Home, Alexa, Samsung SmartThings, Home Assistant
Frequently Asked Questions
Which is better overall: Shelly Flood or YoLink Water Leak Sensor 4?
YoLink Water Leak Sensor 4 has the stronger overall profile in this comparison, especially for price, rating, and weather resistance.
What is the biggest difference between Shelly Flood and YoLink Water Leak Sensor 4?
Price is one of the clearest differences: Shelly Flood lists $24.99, while YoLink Water Leak Sensor 4 lists $23.99.
Which one looks better on price?
Shelly Flood is listed at $24.99, while YoLink Water Leak Sensor 4 is listed at $23.99. YoLink Water Leak Sensor 4 (better spec).
Who should buy Shelly Flood?
Choose Shelly Flood if your priority is integrations and that matters more than price.
Who should buy YoLink Water Leak Sensor 4?
Choose YoLink Water Leak Sensor 4 if your priority is price and rating and that matters more than integrations.
