Updated September 2026
Data from Amazon and official Meross and Honeywell Home sites.
2026 verdict
Use freeze alerts versus leak-only sensing, IP44 versus IP67 weather resistance as the filter, and the Resideo L1 WiFi Water Leak and Freeze Detector is the water leak sensor that remains.
The rest of its lead is 2 years of battery life, a wider sensor set, and richer alert options. Resideo L1 WiFi Water Leak and Freeze Detector can warn about freeze conditions, while Meross Smart Water Leak Sensor is built for leak contact only. Meross Smart Water Leak Sensor keeps IP67 weather resistance, wider smart-home integrations, and the more affordable option, so it remains the pick when that priority beats 2 years of battery life. Most households that want a capable water leak sensor should take the Resideo L1 WiFi Water Leak and Freeze Detector, and leave the Meross Smart Water Leak Sensor for the narrower case above.
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 | Meross Smart Water Leak Sensor | Resideo L1 WiFi Water Leak and Freeze Detector | Winner |
|---|---|---|---|
| Price | $23.99 | $68.00 | Meross Smart Water Leak Sensor |
| Warranty | 1 year | 2 years | Resideo L1 WiFi Water Leak and Freeze Detector |
| Weather Resistance | IP67 | IP44 | Meross Smart Water Leak Sensor |
| Battery Life | 1.5 years | 2 years | Resideo L1 WiFi Water Leak and Freeze Detector |
| Connectivity | Other | 2.4 GHz WiFi, Bluetooth | Resideo L1 WiFi Water Leak and Freeze Detector |
| Integrations | Apple HomeKit, Samsung SmartThings, Home Assistant | None | Meross Smart Water Leak Sensor |
| Sensors | Water Leak | Water Leak, Temperature | Resideo L1 WiFi Water Leak and Freeze Detector |
| Alerts | Water Leak Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts | Resideo L1 WiFi Water Leak and Freeze Detector |
| On Device Alert Light | NO | YES | Resideo L1 WiFi Water Leak and Freeze Detector |
| Rating | 3.7 | 3.7 | Tie |
| On Device Alert Sound | YES | YES | Tie |
$23.99
- + Price: $23.99
- + Weather Resistance: IP67
- + Integrations: Apple HomeKit, Samsung SmartThings, Home Assistant
- - Warranty: 1 year vs 2 years
- - Battery Life: 1.5 years vs 2 years
Winner
$68.00
- + Warranty: 2 years
- + Battery Life: 2 years
- + Connectivity: 2.4 GHz WiFi, Bluetooth
- - Price: $68.00 vs $23.99
- - Weather Resistance: IP44 vs IP67
Frequently Asked Questions
Which is better overall: Meross Smart Water Leak Sensor or Resideo L1 WiFi Water Leak and Freeze Detector?
The Resideo L1 WiFi Water Leak and Freeze Detector is better overall as a water leak sensor. It wins on 2 years of battery life, a wider sensor set, and richer alert options. The Meross Smart Water Leak Sensor is the alternative when you want IP67 weather resistance and wider smart-home integrations.
What is the biggest difference between the Meross Smart Water Leak Sensor and the Resideo L1 WiFi Water Leak and Freeze Detector?
Freeze coverage. Resideo L1 WiFi Water Leak and Freeze Detector can alert on low temperature as well as leaks, while Meross Smart Water Leak Sensor is leak-only.
Which water leak sensor lasts longer on batteries, the Meross Smart Water Leak Sensor or the Resideo L1 WiFi Water Leak and Freeze Detector?
Resideo L1 WiFi Water Leak and Freeze Detector is rated for 2 years, and Meross Smart Water Leak Sensor is rated for 1.5 years. That is the published battery spec, not a store claim.
Can the Meross Smart Water Leak Sensor and the Resideo L1 WiFi Water Leak and Freeze Detector warn about freezing pipes?
Resideo L1 WiFi Water Leak and Freeze Detector lists freeze alerts as YES. Meross Smart Water Leak Sensor does not list freeze alerts. If basement freeze coverage is the reason you are shopping, pick the sensor that actually publishes that alert.
Who should buy the Meross Smart Water Leak Sensor?
Buy the Meross Smart Water Leak Sensor if IP67 weather resistance is the priority, along with wider smart-home integrations and the more affordable option. Choose the Resideo L1 WiFi Water Leak and Freeze Detector instead when 2 years of battery life matters more than those extras.
Who should buy the Resideo L1 WiFi Water Leak and Freeze Detector?
Buy the Resideo L1 WiFi Water Leak and Freeze Detector if 2 years of battery life is the priority, along with a wider sensor set and richer alert options. Choose the Meross Smart Water Leak Sensor instead when IP67 weather resistance matters more than those extras.
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
YoLinkWater Leak Sensor 4
17% OFF$23.99$19.99
ShellyFlood S Gen4
$27.99
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
$109.95
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
Door & Window SensorsMerossSmart Door and Window Sensor
3.0(36)18% OFF$21.99$17.99
Energy MonitorsMerossEM06P
4.2(143)
Energy MonitorsMerossEM16P
4.2(43)10% OFF$199.99$179.99
Garage Door OpenersMerossMSG100 Smart Garage Door Opener
4.2(6,662)15% OFF$49.99$42.49
HubsMerossSmart Wi-Fi Hub MSH400HK
HubsMerossSmart Wi-Fi Hub MSH450
4.2(190)€24.99
LED BulbsMerossSmart Wi-Fi LED Bulb
4.0(792)$17.04
LED BulbsMerossSmart Wi-Fi LED Bulb with Dimmable Light
4.2(338)$44.64
PlugsMerossMatter Smart Plug Mini
4.2(208)$17.99
PlugsMerossOutdoor Smart Plug (3 Sockets)
4.4(4,748)10% OFF$30.99$27.89
PlugsMerossOutdoor Smart Plug
4.4(3,957)10% OFF$25.99$23.39
PlugsMerossSmart Wi-Fi Plug
4.3(3,154)$21.99
Presence SensorsMerossPresence Sensor MS605
3.0(82)6% OFF$27.59$25.99
Presence SensorsMerossSmart Presence Sensor
3.9(113)$33.99
Radiator ValvesMerossSmart Thermostat Valve
3.8(980)€28.41
RelaysMerossMatter Smart DIY Switch with Energy Monitor
4.4(2,763)15% OFF£19.99£16.99
Temperature & Humidity SensorsMerossSmart Temperature and Humidity Sensor
3.6(88)$14.99
ThermostatsMerossMTS300 Smart Thermostat
3.8(815)5% OFF$62.99$59.84- Water Leak SensorsMeross
Smart Water Leak Sensor
3.7(41)$23.99 
Water ValvesMerossSmart Sprinkler Timer
4.0(29)19% OFF$56.99$45.99
ThermostatsHoneywell HomeRTH9585WF Wi-Fi Smart Color Thermostat
4.3(20,090)33% OFF$179.99$120.99
ThermostatsHoneywell HomeT5 Smart Thermostat
4.2(1,456)30% OFF$109.99$77.39
ThermostatsHoneywell HomeT9 Smart Thermostat
4.3(2,986)$209.99
ThermostatsHoneywell HomeX2S Smart Thermostat
4.2(409)25% OFF$79.98$59.99
ThermostatsHoneywell HomeX7S Smart Thermostat
4.2(70)24% OFF$199.99$151.03
ThermostatsHoneywell HomeX8S Smart Thermostat
4.1(141)$256.22
Water Leak SensorsHoneywell HomeL1 WiFi Water Leak and Freeze Detector
3.7(63)$68.00