Water Leak Sensors · Head to head

Shelly Flood S Gen4 vs YoLink Water Leak Sensor 1

Full Smart Water Leak Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Shelly and YoLink sites.
2026 verdict
For most buyers in 2026, Shelly Flood S Gen4 is the safer pick over YoLink Water Leak Sensor 1 because of warranty, connectivity, and integrations.
Shelly Flood S Gen4
Winner
Shelly Flood S Gen4
$27.99

Last recorded price

Buy on Amazon USA
Its clearest strengths are warranty, connectivity, and integrations, and it still looks stronger on on device alert sound. The only strong reason to choose YoLink Water Leak Sensor 1 is if price, weather resistance, and battery life are more important to you than the overall verdict. For the average buyer, Shelly Flood S Gen4 is the safer choice.
vs
YoLink Water Leak Sensor 1
YoLink
#6 Best Seller in Water Leak Sensors

YoLink Water Leak Sensor 1

15% OFF
Prime exclusive deal
$16.99
$19.99

Last recorded price

Buy on Amazon USA

Also sold in packs

  • Pack of 3$49.99$16.66 per unitBuy
  • Pack of 4$59.99$15.00 per unitBuy
  • Pack of 5$69.99$14.00 per unitBuy
  • Pack of 7$104.99$15.00 per unitBuy
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FeatureShelly Flood S Gen4YoLink Water Leak Sensor 1Winner
Price$27.99$16.99YoLink Water Leak Sensor 1
Warranty3 years2 yearsShelly Flood S Gen4
Weather ResistanceIP67IP68YoLink Water Leak Sensor 1
Battery Life2 years5 yearsYoLink Water Leak Sensor 1
Connectivity2.4 GHz WiFi, Bluetooth, ZigbeeOtherShelly Flood S Gen4
IntegrationsGoogle Home, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterHome AssistantShelly Flood S Gen4
On Device Alert SoundYESNOShelly Flood S Gen4
Rating4.64.6Tie
SensorsWater LeakWater LeakTie
AlertsWater Leak Alerts, Low Battery AlertsWater Leak Alerts, Low Battery AlertsTie
On Device Alert LightYESYESTie
Winner
Shelly

Shelly Flood S Gen4

Prime exclusive deal
$27.99

Last recorded price

Buy on Amazon USA
  • + Warranty: 3 years
  • + Connectivity: 2.4 GHz WiFi, Bluetooth, Zigbee
  • + Integrations: Google Home, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
  • - Price: $27.99 vs $16.99
  • - Weather Resistance: IP67 vs IP68
YoLink

YoLink Water Leak Sensor 1

15% OFF
Prime exclusive deal
$16.99
$19.99

Last recorded price

Buy on Amazon USA
  • + Price: $16.99
  • + Weather Resistance: IP68
  • + Battery Life: 5 years
  • - Warranty: 2 years vs 3 years
  • - Connectivity: Other vs 2.4 GHz WiFi, Bluetooth, Zigbee

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Shelly Flood S Gen4
  • YoLink Water Leak Sensor 1

Loading price history...

Frequently Asked Questions

Which is better overall: Shelly Flood S Gen4 or YoLink Water Leak Sensor 1?

Shelly Flood S Gen4 has the stronger overall profile in this comparison, especially for warranty, connectivity, and integrations.

What is the biggest difference between Shelly Flood S Gen4 and YoLink Water Leak Sensor 1?

Price is one of the clearest differences: Shelly Flood S Gen4 lists $27.99, while YoLink Water Leak Sensor 1 lists $16.99.

Which one looks better on price?

Shelly Flood S Gen4 is listed at $27.99, while YoLink Water Leak Sensor 1 is listed at $16.99. YoLink Water Leak Sensor 1 (better spec).

Who should buy Shelly Flood S Gen4?

Choose Shelly Flood S Gen4 if your priority is warranty and connectivity and that matters more than price.

Who should buy YoLink Water Leak Sensor 1?

Choose YoLink Water Leak Sensor 1 if your priority is price and weather resistance and that matters more than warranty.

Full comparison table

Compare all 34 Water Leak Sensors side by side

You are looking at two of them. The full table lines up all Water Leak Sensors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.

  • 34 Water Leak Sensors
  • 36 specs compared
  • 33 filters
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