Updated October 2026
Data from Amazon and official Sonoff and YoLink sites.
2026 verdict
More sensing and a real siren give the YoLink Water Leak Sensor 4 this comparison against the Sonoff Zigbee Water Leak Sensor.
The YoLink Water Leak Sensor 4 is IP66, runs about five years on two AAA cells, and adds low-temperature and freeze alerts plus a 105 dB siren and a light that work without the hub. The Sonoff Zigbee Water Leak Sensor is the cheaper way into Zigbee: it is IP67, needs only a Zigbee hub, and pairs quickly with Home Assistant, Hubitat and SmartThings, but it has no sound or light of its own. The Sonoff Zigbee Water Leak Sensor is also the one that reaches Apple Home and Matter, through a SONOFF bridge. Pick the YoLink Water Leak Sensor 4 when you want local warning and freeze sensing, and the Sonoff Zigbee Water Leak Sensor for a multi-sensor Zigbee build where value beats extras.
vs
Winner
29% OFF
$17.09
$23.99
12% above its lowest price of the last 6 months ($15.29)
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| Feature | Sonoff Zigbee Water Leak Sensor | YoLink Water Leak Sensor 4 | Winner |
|---|---|---|---|
| Price | $14.99 | $17.09 | Sonoff Zigbee Water Leak Sensor |
| Rating | 4.3 | 4.7 | YoLink Water Leak Sensor 4 |
| Warranty | 1 year | 2 years | YoLink Water Leak Sensor 4 |
| Weather Resistance | IP67 | IP66 | Sonoff Zigbee Water Leak Sensor |
| Integrations | Google Home, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Home Assistant | Sonoff Zigbee Water Leak Sensor |
| Sensors | Water Leak | Water Leak, Temperature | YoLink Water Leak Sensor 4 |
| Alerts | Water Leak Alerts, Low Battery 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 |
| Battery Life | 5 years | 5 years | Tie |
| Connectivity | Zigbee | Other | Tie |
What the differences mean
Alarm and light
The YoLink Water Leak Sensor 4 has a 105 dB siren and an alert light that work without the hub. The Sonoff Zigbee Water Leak Sensor has no on-device sound or light, so it depends entirely on the hub to warn you.
Sensing
The YoLink Water Leak Sensor 4 reports water plus low temperatures and freeze risk. The Sonoff Zigbee Water Leak Sensor detects water only, with no temperature or freeze alerts.
Ecosystem and hub
The Sonoff Zigbee Water Leak Sensor needs a Zigbee hub and works with Home Assistant, Hubitat and SmartThings, and reaches Apple Home and Matter through a SONOFF bridge. The YoLink Water Leak Sensor 4 needs a YoLink hub and supports Home Assistant.
Battery
The YoLink Water Leak Sensor 4 is rated about five years on two AAA cells, and the Sonoff Zigbee Water Leak Sensor about five years on a single CR2477, so battery life is close.
Waterproofing
The Sonoff Zigbee Water Leak Sensor is IP67, a touch better than the YoLink's IP66. Both are fine in damp spots and neither should be left submerged.
Which one to buy if
- you want a siren at the sensor
The YoLink Water Leak Sensor 4 sounds 105 dB and lights up on its own, which the Sonoff Zigbee Water Leak Sensor cannot.
- you want freeze alerts as well as water
The YoLink Water Leak Sensor 4 reports low temperatures and sends freeze alerts; the Sonoff Zigbee Water Leak Sensor is leak only.
- you are building a Zigbee network on Home Assistant
The Sonoff Zigbee Water Leak Sensor pairs in a minute or two there and can trigger a shutoff valve.
- you want the lowest price per sensor
The Sonoff Zigbee Water Leak Sensor is the cheaper unit, which makes blanketing a home affordable.
- you need Apple Home or Matter
The Sonoff Zigbee Water Leak Sensor reaches Apple Home and Matter through a SONOFF bridge; the YoLink Water Leak Sensor 4 does not.
- + Price: $14.99
- + Weather Resistance: IP67
- + Integrations: Google Home, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- - Rating: 4.3 vs 4.7
- - Warranty: 1 year vs 2 years
Winner
29% OFF
$17.09
$23.99
- + Rating: 4.7
- + Warranty: 2 years
- + Sensors: Water Leak, Temperature
- - Price: $17.09 vs $14.99
- - Weather Resistance: IP66 vs IP67
What owners say
YoLink Water Leak Sensor 4 owners describe the sensor catching real leaks before serious damage and rely on the 105 dB siren that works even offline; long range and about five years on two AAA cells are the other refrains, with the app, the missing tamper alert and the absent cable their usual complaints. Sonoff Zigbee Water Leak Sensor owners on Home Assistant and Hubitat describe pairing in a minute or two and automations that run right away, including tripping a shutoff valve, and they like the waterproof, tool-free design; their friction is SmartThings, where several forced a manual pair, plus the total absence of an on-device alarm or light.
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.
- Sonoff Zigbee Water Leak Sensor
- YoLink Water Leak Sensor 4
Loading price history...
Frequently Asked Questions
Which is better overall: the Sonoff Zigbee Water Leak Sensor or the YoLink Water Leak Sensor 4?
The YoLink Water Leak Sensor 4 wins overall, with a higher owner rating, a longer warranty, more sensor and alert coverage, and a built-in alert sound and light. The Sonoff Zigbee Water Leak Sensor is still cheaper and slightly more weather-resistant.
What is the biggest difference between the Sonoff Zigbee Water Leak Sensor and the YoLink Water Leak Sensor 4?
Local alerting and sensor depth. The YoLink Water Leak Sensor 4 adds an on-device siren and light plus freeze alerts, while the Sonoff Zigbee Water Leak Sensor stays silent locally and depends on its Zigbee hub for every notification.
Does the Sonoff Zigbee Water Leak Sensor have a built-in alarm?
No, it has no on-device sound or light, so the hub makes the noise. The YoLink Water Leak Sensor 4 has a 105 dB siren and a light of its own.
Does the YoLink Water Leak Sensor 4 work with SmartThings?
No. It supports Home Assistant but not SmartThings, HomeKit or Google Home. The Sonoff Zigbee Water Leak Sensor works with SmartThings, Home Assistant and Hubitat, and reaches Apple Home and Matter through a SONOFF bridge.
Who should buy the YoLink Water Leak Sensor 4?
Buy it if you want the better-rated, longer-warrantied sensor with a built-in alarm, freeze alerts and broader alert coverage, especially across a large property.
Who should buy the Sonoff Zigbee Water Leak Sensor?
Choose it if you already run a Zigbee hub and want the cheaper, more weather-resistant option with Apple Home and Matter reachable through a SONOFF bridge.
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
- YoLink
Water Leak Sensor 4
29% OFF$23.99$17.09 
YoLinkWater Leak Sensor 1
15% OFF$19.99$16.99
X-SenseWi-Fi Water Leak Detector
25% OFF
$15.99$11.99
TP-LinkTapo T300
$19.99
ShellyFlood S Gen4
$27.99
AeotecWater Leak Sensor
$39.99
EufyWater and Freeze Sensor
$34.99
EveWater Guard
32% OFF$109.95$74.95
GoveeWater Leak Detector 2
14% OFF$69.99$59.99
SwitchBotWater Leak Detector
$16.99
AqaraWater Leak Sensor T1
€20.99
SwitchBotWater Leak Detector (Sensor Cable Edition)
5% OFF$19.99$18.99
FibaroFlood Sensor (Z-Wave)
$61.32- Sonoff
Zigbee Water Leak Sensor
$14.99 
AqaraWater Leak Sensor
$18.99
GoveeWater Sensor Alarm
$15.99
ShellyFlood Gen4
$39.99
EufyFlood & Freeze Sensor E20
25% OFF$39.99$29.99
HeimanSmart Water Leakage Sensor
15% OFF$19.99$16.99
FibaroFlood Sensor (HomeKit)
$43.28
Air Quality MonitorsSonoffSAWF-07P Air Quality Monitor
3.7(193)$39.90
Air Quality MonitorsSonoffSAWF-08P Air Quality Monitor
4.3(169)$49.90
CamerasSonoffCAM GlassView
4.4(30)$34.90
CamerasSonoffCam Outdoor DUO
$79.90
CamerasSonoffCam Slim Gen2
4.4(176)$19.90
CamerasSonoffGK-200MP2-B
4.0(149)30% OFF$9.99$6.99
DisplaysSonoffNSPanel Pro Gen2
3.4(11)€149.90
DisplaysSonoffNSPanel Pro
4.1(75)$129.90
DonglesSonoffDongle Lite MG21
4.5(452)$24.90
DonglesSonoffDongle Max
4.3(603)18% OFF€38.99€32.13
DonglesSonoffDongle Plus MG24
4.7(690)$35.90
DonglesSonoffDongle Plus PP10
4.6(99)$35.90
DonglesSonoffDongle-PZG23
4.6(175)$39.90
DonglesSonoffZ-Wave 800 PoE Dongle Max
4.5(26)$44.90
DonglesSonoffZBDongle-E
4.7(3,743)$24.90
DonglesSonoffZBDongle-P
4.6(5,678)16% OFF$39.99$33.47
Door & Window SensorsSonoffDW2-WIFI
3.8(1,058)$12.23
Door & Window SensorsSonoffSNZB-04 ZigBee Wireless Door/Window Sensor
3.7(101)$17.99
Door & Window SensorsSonoffSNZB-04P ZigBee Door/Window Sensor
4.0(13)$18.99
Door & Window SensorsSonoffSenseGuard DW Gen2
4.4(203)£35.00
CamerasYoLinkUno
4.2(135)$69.99
Door & Window SensorsYoLinkLoRa Smart Outdoor Contact Sensor
4.5(1,006)$24.99
Door & Window SensorsYoLinkSolar Outdoor Door Sensor
4.5(1,006)$31.99
HubsYoLinkHub
4.5(1,421)21% OFF$29.99$23.59
Motion SensorsYoLinkIndoor Motion Sensor RT
4.5(2,007)$27.99
Motion SensorsYoLinkLoRa 1/4 Mile Motion Sensor
4.5(2,007)$23.99
PlugsYoLinkMini Plug
4.6(702)$19.99
PlugsYoLinkSmart Outdoor Energy Plug
4.6(702)15% OFF$32.98$27.99
Smoke & CO DetectorsYoLinkPhotoelectric Smoke Alarm
5.0(13)$49.99
Temperature & Humidity SensorsYoLinkSmart Wireless Thermometer Hygrometer
4.7(876)$18.99- Water Leak SensorsYoLink
Water Leak Sensor 1
4.6(6,915)15% OFF$19.99$16.99 - Water Leak SensorsYoLink
Water Leak Sensor 4
4.7(1,715)29% OFF$23.99$17.09 
Water Shutoff ValvesYoLinkFlowSmart All-in-One Water Meter & Shutoff
C$407.65
Water Shutoff ValvesYoLinkValve Controller 2 with EVO Valve Operator
4.5(186)$239.00
Water TimersYoLinkSmart Sprinkler Timer
4.6(31)8% OFF$59.99$54.99