Winner
Updated September 2026
Data from Amazon and official Moen and Sonoff sites.
2026 verdict
Leak-only Zigbee cannot match Moen's freeze kit.
The Moen Smart Leak Detector is the better overall water leak sensor, winning on sensors, alerts, an on-device siren and an alert light. Temperature, freeze alerts and a 48-inch cable ride on hub-free Wi-Fi. The Sonoff Zigbee Water Leak Sensor answers with a lower price, a better owner rating, a 5-year battery and broader integrations (Google Home, Alexa, SmartThings, Home Assistant, with a SONOFF hub for HomeKit and Matter), but it is leak-only with no local alarm. Choose the Moen Smart Leak Detector for freeze coverage you can hear; choose the Sonoff Zigbee Water Leak Sensor for a cheap long-life Zigbee leak disc.
Price alerts
Water Leak Sensor prices change while you decide
We check the price of every Water Leak Sensor in the catalog daily and email you the drops, whichever one you pick.
| Feature | Moen Smart Leak Detector | Sonoff Zigbee Water Leak Sensor | Winner |
|---|---|---|---|
| Price | $51.00 | $14.99 | Sonoff Zigbee Water Leak Sensor |
| Rating | 3.3 | 4.3 | Sonoff Zigbee Water Leak Sensor |
| Battery Life | 2 years | 5 years | Sonoff Zigbee Water Leak Sensor |
| Integrations | Alexa, Home Assistant | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Sonoff Zigbee Water Leak Sensor |
| Sensors | Water Leak, Temperature | Water Leak | Moen Smart Leak Detector |
| Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts | Water Leak Alerts, Low Battery Alerts | Moen Smart Leak Detector |
| On Device Alert Sound | YES | NO | Moen Smart Leak Detector |
| On Device Alert Light | YES | NO | Moen Smart Leak Detector |
| Warranty | 1 year | 1 year | Tie |
| Weather Resistance | IP67 | IP67 | Tie |
| Connectivity | 2.4 GHz WiFi | Zigbee | Tie |
Winner
7% OFF
$51.00
$54.87
- + Sensors: Water Leak, Temperature
- + Alerts: Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts
- + On Device Alert Sound: YES
- - Price: $51.00 vs $14.99
- - Rating: 3.3 vs 4.3
- + Price: $14.99
- + Rating: 4.3
- + Battery Life: 5 years
- - Sensors: Water Leak vs Water Leak, Temperature
- - Alerts: Water Leak Alerts, Low Battery Alerts vs Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts
Frequently Asked Questions
Which is better overall: Moen Smart Leak Detector or Sonoff Zigbee Water Leak Sensor?
The Moen Smart Leak Detector is the better overall water leak sensor. It wins on sensors, alerts, on-device alert sound and on-device alert light. The Sonoff Zigbee Water Leak Sensor wins on price, rating, battery life and integrations.
Does the Sonoff Zigbee Water Leak Sensor detect freeze risk?
No. The Sonoff Zigbee Water Leak Sensor is leak-only (with an optional sensing cable). The Moen Smart Leak Detector includes temperature and freeze-temperature alerts.
Which sensor has the longer battery life?
The Sonoff Zigbee Water Leak Sensor is rated for 5 years on a CR2477. The Moen Smart Leak Detector is rated for 2 years on a CR123A.
Who should buy the Moen Smart Leak Detector?
Buy the Moen Smart Leak Detector for hub-free Wi-Fi leak and freeze alerts with a local siren, an LED and a sensing cable.
Who should buy the Sonoff Zigbee Water Leak Sensor?
Buy the Sonoff Zigbee Water Leak Sensor if you want a cheaper IP67 leak-only Zigbee sensor with a 5-year battery for Home Assistant, SmartThings or a SONOFF hub.
Full comparison table
Compare all 32 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.
- 32 Water Leak Sensors
- 36 specs compared
- 33 filters
ShellyFlood S Gen4
$27.99
YoLinkWater Leak Sensor 4
17% OFF$23.99$19.99
YoLinkWater Leak Sensor 1
10% OFF$16.99$15.29
X-SenseWi-Fi Water Leak Detector
$15.99
TP-LinkTapo T300
15% OFF$19.99$16.99
SwitchBotWater Leak Detector
$16.99
AeotecWater Leak Sensor
$39.99
EufyWater and Freeze Sensor
$34.99
EveWater Guard
9% OFF$109.95$99.95
AqaraWater Leak Sensor T1
C$36.99
GoveeWater Leak Detector 2
$69.99
SwitchBotWater Leak Detector (Sensor Cable Edition)
10% OFF$19.99$17.99
FibaroFlood Sensor (Z-Wave)
16% OFF$78.53$66.12
SonoffZigbee Water Leak Sensor
$14.99
AqaraWater Leak Sensor
$18.99
GoveeWater Sensor Alarm
$15.99
ShellyFlood Gen4
$39.99
HeimanSmart Water Leakage Sensor
20% OFF$19.99$15.99
FibaroFlood Sensor (HomeKit)
$43.28
AeotecWater Sensor 7 Pro
$47.95
Air Quality MonitorsSonoffSAWF-07P Air Quality Monitor
3.7(178)$39.90
Air Quality MonitorsSonoffSAWF-08P Air Quality Monitor
4.2(162)$49.90
CamerasSonoffCAM GlassView
$34.90
CamerasSonoffCam Slim Gen2
4.4(158)$19.90
CamerasSonoffGK-200MP2-B
4.0(149)30% OFF$9.99$6.99
DisplaysSonoffNSPanel Pro Gen2
3.3(10)€149.90
DisplaysSonoffNSPanel Pro
4.0(70)$129.90
DonglesSonoffDongle Lite MG21
4.6(401)25% OFF$24.90$18.68
DonglesSonoffDongle Max
4.2(544)
DonglesSonoffDongle Plus MG24
4.7(630)$38.41
DonglesSonoffDongle Plus PP10
4.7(70)$35.90
DonglesSonoffDongle-PZG23
4.6(167)10% OFF$39.90$35.91
DonglesSonoffZBDongle-E
4.6(3,697)$50.80
DonglesSonoffZBDongle-P
4.6(5,627)15% OFF$39.99$34.07
Door & Window SensorsSonoffDW2-WIFI
3.8(1,059)$12.23
Door & Window SensorsSonoffSNZB-04 ZigBee Wireless Door/Window Sensor
3.8(102)$17.99
Door & Window SensorsSonoffSNZB-04P ZigBee Door/Window Sensor
3.9(12)$18.99
Door & Window SensorsSonoffSenseGuard DW Gen2
4.4(171)
Energy MonitorsSonoffMINI PM Matter Over WiFi Power Meter (Non-Switch)
$15.90
Energy MonitorsSonoffMINI PM Zigbee Power Meter (Non-Switch)
4.1(82)$15.90