Winner
Updated August 2026
Data from Amazon and official Shelly and X-Sense sites.
2026 verdict
Connectivity range wins out for the Shelly Flood Gen4 in this water leak sensor comparison, which supports WiFi, Zigbee, Bluetooth and Matter plus a wider set of integrations, more supported sensors and alerts, and an on-device alert light beyond the X-Sense Wi-Fi Water Leak Detector's WiFi-only, app-locked design. The X-Sense Wi-Fi Water Leak Detector answers with a lower price, a higher owner rating, a longer warranty, better weather resistance, and a longer battery life, making it the more affordable, better-reviewed standalone option. Both include a loud on-device alarm sound. Choose the Shelly Flood Gen4 for the broadest connectivity and integrations; pick the X-Sense Wi-Fi Water Leak Detector if price, rating, warranty and weatherproofing matter more.
| Feature | Shelly Flood Gen4 | X-Sense Wi-Fi Water Leak Detector | Winner |
|---|---|---|---|
| Price | $39.99 | $11.99 | X-Sense Wi-Fi Water Leak Detector |
| Rating | 4.2 | 4.6 | X-Sense Wi-Fi Water Leak Detector |
| Warranty | 3 years | 5 years | X-Sense Wi-Fi Water Leak Detector |
| Weather Resistance | IP44 | IP66 | X-Sense Wi-Fi Water Leak Detector |
| Battery Life | 2 years | 3 years | X-Sense Wi-Fi Water Leak Detector |
| Connectivity | 2.4 GHz WiFi, Bluetooth, Zigbee | 2.4 GHz WiFi | Shelly Flood Gen4 |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | None | Shelly Flood Gen4 |
| Sensors | Water Leak, Temperature | Water Leak | Shelly Flood Gen4 |
| Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts | Water Leak Alerts, Low Battery Alerts | Shelly Flood Gen4 |
| On Device Alert Light | YES | NO | Shelly Flood Gen4 |
| On Device Alert Sound | YES | YES | Tie |
Winner
$39.99
- + Connectivity: 2.4 GHz WiFi, Bluetooth, Zigbee
- + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- + Sensors: Water Leak, Temperature
- - Price: $39.99 vs $11.99
- - Rating: 4.2 vs 4.6
25% OFF
$11.99
$15.99
- + Price: $11.99
- + Rating: 4.6
- + Warranty: 5 years
- - Connectivity: 2.4 GHz WiFi vs 2.4 GHz WiFi, Bluetooth, Zigbee
- - Integrations: None vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
Frequently Asked Questions
Which is better overall, the Shelly Flood Gen4 or the X-Sense Wi-Fi Water Leak Detector?
The Shelly Flood Gen4 wins overall on connectivity, integrations, and sensor and alert support, plus its alert light. The X-Sense Wi-Fi Water Leak Detector is cheaper, better rated, longer warrantied, more weather resistant, and lasts longer on its battery.
What is the main difference between the Shelly Flood Gen4 and the X-Sense Wi-Fi Water Leak Detector?
Smart home reach versus value and durability. The Shelly Flood Gen4 connects over WiFi, Zigbee, Bluetooth and Matter with wide platform integrations, while the X-Sense Wi-Fi Water Leak Detector is WiFi-only with no third-party integrations but costs less, rates higher, and is backed by a longer warranty.
Does either one work with Alexa or Google Home?
Only the Shelly Flood Gen4. It integrates with Google Home, Alexa, Apple HomeKit and SmartThings, while the X-Sense Wi-Fi Water Leak Detector has no third-party platform support at all.
Which one has the longer warranty?
The X-Sense Wi-Fi Water Leak Detector carries the longer manufacturer warranty of the two.
Who should buy the Shelly Flood Gen4?
Buyers who want the widest connectivity and smart home integration, including Zigbee, Bluetooth and Matter support.
Who should buy the X-Sense Wi-Fi Water Leak Detector?
Buyers who want the cheaper, better-rated, longer-warrantied, more weather-resistant standalone sensor.
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
25% OFF$15.99$11.99
TP-LinkTapo T300
$19.99
EufyWater and Freeze Sensor
$34.99
EveWater Guard
28% OFF$109.95$78.99
SwitchBotWater Leak Detector
$16.49
AeotecWater Leak Sensor
$39.99
GoveeLifeWater Leak Detector 2
20% OFF$69.99$55.99
AqaraWater Leak Sensor T1
HeimanSmart Water Leakage Sensor
$19.99
GoveeLifeWater Sensor Alarm
$15.99
SwitchBotWater Leak Detector (Sensor Cable Edition)
15% OFF$19.99$16.99
FibaroFlood Sensor (Z-Wave)
16% OFF$78.53$66.12
SonoffZigbee Water Leak Sensor
$14.99
AqaraWater Leak Sensor
$18.99- Shelly
Flood Gen4
$39.99 
FibaroFlood Sensor (HomeKit)
$43.28
Third RealityWater Leak Sensor
$20.99
AeotecWater Sensor 7 Pro
$47.95
DisplaysShellyWall Display
18% OFF€147.56€121.33
Energy MonitorsShelly3EM-63W Gen3
Energy MonitorsShellyEM Gen3
$69.99
Energy MonitorsShellyEM Gen4
Energy MonitorsShellyEM Mini Gen4
$24.99
Energy MonitorsShellyPro 3EM 3CT63
$150.99
Energy MonitorsShellyPro 3EM-400
$329.99
Energy MonitorsShellyPro 3EM v2
$154.99
Energy MonitorsShellyPro EM-50
$119.99
Gas DetectorsShellyGAS (CNG)
Gas DetectorsShellyGAS (LPG)
Motion SensorsShellyBlu Motion
$25.99
PlugsShellySmart Plug UL
$24.99
PlugsShellySmart Plug (US)
29% OFF$30.87$22.00
Radiator ValvesShellyBLU TRV
$64.99
RelaysShellyShelly 1 Gen3
$22.99
RelaysShellyShelly 1 Gen4
$24.99
RelaysShellyShelly 1 Mini Gen4
$24.98
RelaysShellyShelly 1 Mini Gen3
$17.99
RelaysShellyShelly 1PM Gen4
$28.99
Motion SensorsX-SenseSolar Outdoor Spotlight - Motion-Sensor
9% OFF$64.99$58.89
Smoke & CO DetectorsX-SenseSC07-MR Smart Smoke & CO Alarm
22% OFF$45.99$35.99
Smoke & CO DetectorsX-SenseWi-Fi CO Alarm
Smoke & CO DetectorsX-SenseWi-Fi Smoke Alarm
Smoke & CO DetectorsX-SenseWiFi Smoke & CO Detector
Temperature & Humidity SensorsX-SenseSmart WiFi Indoor Thermometer
28% OFF$15.99$11.49
Water Leak SensorsX-Sense2-in-1 Wi-Fi Water Leak & Freeze Detector
17% OFF$17.99$14.99- Water Leak SensorsX-Sense
Wi-Fi Water Leak Detector
25% OFF$15.99$11.99