Device profile · Specifications & compatibility
Shelly Flood Gen4
Shelly · Water Leak Sensors · Model S4SN-0071A
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- Shelly Flood Gen4 lists Sensor Cable; On Device Alert Sound; Water Leak Alerts.
- Check whether the cable is included, the maximum length and the areas it can cover.
Browse more from Shelly or explore all water leak sensors in our catalog.
- Recorded year
- 2025
- Recorded warranty
- 3 years
- Dimensions
- 97 x 76 x 25 mm
- Weight
- 91g
The details that shape your choice
Shelly Flood Gen4 Quick Features
Start with these specifications, then check the full details and conditions below.
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From specification to decision
Shelly Flood Gen4: Capabilities And Limitations
Based on listed specifications, not hands-on testing. Manufacturer sources are linked where checked.
What it offers
A sensing cable is listed, offering a way to investigate leak coverage beyond a single point. Check whether the cable is included, the maximum length and the areas it can cover. 2m extendable leak sensor cable
View Sensor Cable details →An on-device audible alert is listed as an additional notification route. Check power requirements and whether the alert works independently of network connectivity. Built-in buzzer for local alerts
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 →
What to consider
Tamper alerts are recorded as unavailable.
View Tamper Alerts details →Tilt detection is listed as unavailable.
View Tilt details →
Questions About Shelly Flood Gen4
Does Shelly Flood Gen4 support a water-sensing cable?
Yes, according to the listed specifications. Check whether the cable is included, the maximum length and the areas it can cover. 2m extendable leak sensor cable
View Sensor Cable specifications →Does Shelly Flood Gen4 sound an alert on the device?
Yes, according to the listed specifications. Check power requirements and whether the alert works independently of network connectivity. Built-in buzzer for local alerts
View On Device Alert Sound specifications →Does Shelly Flood Gen4 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 Shelly Flood Gen4 support Matter?
Matter support is documented. This evidence is for Flood Gen4, not Flood S Gen4. Verify the exact device type, firmware and features exposed in your chosen platform. Matter support is not proof of feature parity.
Source: Shelly Flood Gen4 manufacturer product page · Checked 2026-10-04
View Matter specifications →Does Shelly Flood Gen4 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
Shelly Flood Gen4 Specifications
Recorded catalog values. Expand notes for qualifications; unknown values are not treated as missing features.
3 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 | YesDetails & conditions2m extendable leak sensor cable |
|---|
Features3 fields
| On Device Alert Sound | YesDetails & conditionsBuilt-in buzzer for local alerts |
|---|---|
| On Device Alert Light | YesDetails & conditionsLED button indicator |
| Automations | Yes |
Alerts5 fields
| Water Leak Alerts | Yes |
|---|---|
| Temperature Alerts | Yes |
| Freeze Temperature Alerts | Yes |
| Low Battery Alerts | YesDetails & conditionsShort beep (0.3 sec ON / 5 sec OFF) indicates low battery when the battery level is below 20% |
| Tamper Alerts | No |
Connectivity7 fields
| 2.4 GHz Wi-Fi | YesDetails & conditions802.11 b/g/n/ax |
|---|---|
| 5 GHz Wi-Fi | No |
| Bluetooth | Yes |
| Z Wave | No |
| Zigbee | Yes |
| Thread | No |
| Other | No |
Integrations6 fields
| Google Home | Yes |
|---|---|
| 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 | YesDetails & conditionsVia Matter |
| SmartThings | YesDetails & conditionsVia Matter |
| Home Assistant | Yes |
| Matter | YesManufacturer sourceMatter support is documented. Shelly Flood Gen4 manufacturer product page →
This evidence is for Flood Gen4, not Flood S Gen4. Document check only; not a hands-on test or verification of every regional or firmware variant. |
Power3 fields
| Wired | No |
|---|---|
| Battery Type | 4x AA |
| Battery Life | 2 years |
Sensors3 fields
| Water Leak | YesManufacturer sourceThe device detects water leaks. Shelly Flood Gen4 manufacturer product page →
This evidence is for Flood Gen4, not Flood S Gen4. Document check only; not a hands-on test or verification of every regional or firmware variant. |
|---|---|
| Temperature | YesManufacturer sourceAn integrated sensor measures temperature. Shelly Flood Gen4 manufacturer product page →
This evidence is for Flood Gen4, not Flood S Gen4. Document check only; not a hands-on test or verification of every regional or firmware variant. |
| Tilt | No |
How this device compares
Shelly Flood Gen4 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
Sensor Cable: 8 of 34 known answers are Yes
Included Accessories: 24% among explicit Yes/No answers; 0 of 34 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
On Device Alert Light: 16 of 32 known answers are Yes
Features: 50% among explicit Yes/No answers; 2 of 34 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
Freeze Temperature Alerts: 18 of 34 known answers are Yes
Alerts: 53% 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
3 of 34 models are from Shelly
Counts water leak sensors listed here, not sales or market share. Catalog inclusion does not imply a recommendation.
Side-by-side specification comparison
Compare Shelly Flood Gen4 vs Similar Water Leak Sensors
See how Shelly Flood Gen4 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.