Device profile · Specifications & compatibility
Meross Smart Water Leak Sensor
Meross · Water Leak Sensors · Model MS400H
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- Meross Smart Water Leak Sensor lists On Device Alert Sound; Water Leak Alerts; Home Assistant.
- Check power requirements and whether the alert works independently of network connectivity.
Browse more from Meross or explore all water leak sensors in our catalog.
- Recorded year
- 2022
- Recorded warranty
- 1 year
- Dimensions
- 71.5 x 71.5 x 41.5 mm
- Weight
- 108g
The details that shape your choice
Meross Smart Water Leak Sensor Quick Features
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From specification to decision
Meross Smart Water Leak Sensor: Capabilities And Limitations
Based on listed specifications, not hands-on testing. Manufacturer sources are linked where checked.
What it offers
An on-device audible alert is listed as an additional notification route. Check power requirements and whether the alert works independently of network connectivity. Up to about 60dB when alarming.
View On Device Alert Sound details →Water-leak alerts are recorded as a supported monitoring event. Verify the notification path and any controller dependency. An alert alone does not close a water valve.
View Water Leak Alerts details →A Home Assistant integration is listed, providing an integration path to verify for the exact model. Check the exact integration and firmware. A catalog integration label does not establish local control, official support or available entities.
View Home Assistant details →
What to consider
A sensing cable is listed as unavailable; plan placement around the supported sensing points.
View Sensor Cable details →Matter is listed as unsupported; check another documented integration if Matter is essential to your setup.
View Matter details →Tamper alerts are recorded as unavailable.
View Tamper Alerts details →
Still needs verification
Confirm these details if they matter to your setup.
Questions About Meross Smart Water Leak Sensor
Does Meross Smart Water Leak Sensor support a water-sensing cable?
No, according to the listed specifications. Check whether the cable is included, the maximum length and the areas it can cover.
View Sensor Cable specifications →Does Meross Smart Water Leak Sensor sound an alert on the device?
Yes, according to the listed specifications. Check power requirements and whether the alert works independently of network connectivity. Up to about 60dB when alarming.
View On Device Alert Sound specifications →Does Meross Smart Water Leak Sensor report water-leak alerts?
Yes, according to the listed specifications. Verify the notification path and any controller dependency. An alert alone does not close a water valve.
View Water Leak Alerts specifications →Does Meross Smart Water Leak Sensor support Matter?
No, according to the listed specifications. Verify the exact device type, firmware and features exposed in your chosen platform. Matter support is not proof of feature parity.
View Matter specifications →Does Meross Smart Water Leak Sensor work with Home Assistant?
Yes, according to the listed specifications. Check the exact integration and firmware. A catalog integration label does not establish local control, official support or available entities.
View Home Assistant specifications →Explore the full picture
Meross Smart Water Leak Sensor Specifications
Recorded catalog values. Expand notes for qualifications; unknown values are not treated as missing features.
0 of 28 fields matched to manufacturer documentation. Source checks apply only to the named model and stated scope. Other fields remain catalog data. How we verify specifications →
Included Accessories1 fields
| Sensor Cable | No |
|---|
Features3 fields
| On Device Alert Sound | YesDetails & conditionsUp to about 60dB when alarming. |
|---|---|
| On Device Alert Light | No |
| Automations | Yes |
Alerts5 fields
| Water Leak Alerts | Yes |
|---|---|
| Temperature Alerts | No |
| Freeze Temperature Alerts | No |
| Low Battery Alerts | Not recorded |
| Tamper Alerts | No |
Connectivity7 fields
| 2.4 GHz Wi-Fi | No |
|---|---|
| 5 GHz Wi-Fi | No |
| Bluetooth | No |
| Z Wave | No |
| Zigbee | No |
| Thread | No |
| Other | Sub-1G (Smart Wi-Fi Hub required)Details & conditions802.11 b/g/n 2.4GHz Wi-Fi (smart hub)/ SubG Wireless technology (between smart hub and alarm). |
Integrations6 fields
| Google Home | No |
|---|---|
| Alexa | NoDetails & conditionsAlexa has no water leak sensor type: the Matter Water Leak Detector has no Alexa capability mapping, and bridges such as SmartThings or Home Assistant cannot expose a moisture sensor either |
| Apple Home | Yes |
| SmartThings | Yes |
| Home Assistant | Yes |
| Matter | No |
Power3 fields
| Wired | No |
|---|---|
| Battery Type | CR123A |
| Battery Life | 1.5 years |
Sensors3 fields
| Water Leak | Yes |
|---|---|
| Temperature | No |
| Tilt | No |
How this device compares
Meross Smart Water Leak Sensor vs Other Similar Models
Statistical context from 34 water leak sensors in this catalog. These figures describe our recorded data, not independent measurements.
Recorded feature coverage
On Device Alert Sound: 21 of 34 known answers are Yes
Features: 62% among explicit Yes/No answers; 0 of 34 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
Automations: 27 of 31 known answers are Yes
Features: 87% among explicit Yes/No answers; 3 of 34 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
Water Leak Alerts: 34 of 34 known answers are Yes
Alerts: 100% among explicit Yes/No answers; 0 of 34 devices have no resolved answer. Check the specifications for this model’s conditions.
Brand representation in this directory
2 of 34 models are from Meross
Counts water leak sensors listed here, not sales or market share. Catalog inclusion does not imply a recommendation.
Side-by-side specification comparison
Compare Meross Smart Water Leak Sensor vs Similar Water Leak Sensors
See how Meross Smart Water Leak Sensor stacks up against other water leak sensors in this catalog. Compare specifications, compatibility and pricing.
Catalog specifications have not all been independently checked against manufacturer sources. Read our data and evidence methodology.