Device profile · Specifications & compatibility
Sonoff S31 WiFi Smart Plug
Other Amazon stores
We may earn a commission from qualifying purchases through these links.
Prices and stock change often on Amazon, so we do not show them here. The button opens the current listing.
- Sonoff S31 WiFi Smart Plug lists Maximum Load Power: 1800W; Maximum Load Current: 15A; Plug Format: Type B.
- Verify the load type and manufacturer instructions; a wattage figure alone does not establish compatibility with a particular appliance.
Browse more from Sonoff or explore all plugs in our catalog.
- Recorded year
- 2019
- Recorded warranty
- ?
- Dimensions
- ?
- Weight
- ?
The details that shape your choice
Sonoff S31 WiFi Smart Plug Quick Features
Start with these specifications, then check the full details and conditions below.
Make the differences clear
Which device fits your setup?
Choose another model to compare features, connections and requirements side by side.
From specification to decision
Sonoff S31 WiFi Smart Plug: Capabilities And Limitations
Based on listed specifications, not hands-on testing. Manufacturer sources are linked where checked.
What it offers
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
No specific limitation is established here. Check installation requirements and compatibility before choosing.
Still needs verification
Confirm these details if they matter to your setup.
Questions About Sonoff S31 WiFi Smart Plug
What is the maximum load power of Sonoff S31 WiFi Smart Plug?
Maximum Load Power: 1800W. Verify the load type and manufacturer instructions; a wattage figure alone does not establish compatibility with a particular appliance.
View Maximum Load Power specifications →What is the maximum current of Sonoff S31 WiFi Smart Plug?
Maximum Load Current: 15A. Check voltage, load type and installation instructions alongside the current rating.
View Maximum Load Current specifications →Which plug format does Sonoff S31 WiFi Smart Plug use?
Plug Format: Type B. Match the physical format and electrical rating to the intended country and outlet.
View Plug Format specifications →Does Sonoff S31 WiFi Smart Plug support Matter?
Matter is listed as “SONOFF Hub required”. The stated condition applies to this feature. Verify the exact device type, firmware and features exposed in your chosen platform. Matter support is not proof of feature parity. The device is not Matter itself: SONOFF lists it among the eWeLink Wi-Fi models its Matter bridges (Zigbee Bridge Ultra, iHost, NSPanel Pro) republish into Matter.
View Matter specifications →Does Sonoff S31 WiFi Smart Plug 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
Sonoff S31 WiFi Smart Plug Specifications
Recorded catalog values. Expand notes for qualifications; unknown values are not treated as missing features.
0 of 22 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 →
Power7 fields
| Plug Format | Type B |
|---|---|
| Maximum Load Power | 1800W |
| Maximum Load Current | 15A |
| Load Voltage | 110 - 125V |
| Overheat Overload Protection | Not recorded |
| Energy Monitoring | YesDetails & conditionsReal-time power, current and voltage; stores 100 days of usage data and total cost |
| Usb Charging | No |
Connectivity6 fields
| 2.4 GHz Wi-Fi | Yes |
|---|---|
| 5 GHz Wi-Fi | No |
| Bluetooth | No |
| Z Wave | No |
| Zigbee | No |
| Thread | No |
Features3 fields
| On Off Button | Yes |
|---|---|
| Zigbee Router | No |
| Automations | YesDetails & conditionsSchedules and timers via the eWeLink app |
Integrations6 fields
| Google Home | Yes |
|---|---|
| Alexa | Yes |
| Apple Home | SONOFF Hub requiredDetails & conditionsSONOFF lists this model among the eWeLink Wi-Fi devices its Matter bridges (Zigbee Bridge Ultra, iHost, NSPanel Pro) publish to Matter, which is how it reaches the Apple Home app. |
| SmartThings | YesDetails & conditionsVia the official eWeLink cloud integration |
| Home Assistant | Yes |
| Matter | SONOFF Hub requiredDetails & conditionsThe device is not Matter itself: SONOFF lists it among the eWeLink Wi-Fi models its Matter bridges (Zigbee Bridge Ultra, iHost, NSPanel Pro) republish into Matter. |
How this device compares
Sonoff S31 WiFi Smart Plug vs Other Similar Models
Statistical context from 37 plugs in this catalog. These figures describe our recorded data, not independent measurements.
Recorded feature coverage
2.4 GHz Wi-Fi: 23 of 37 known answers are Yes
Connectivity: 62% among explicit Yes/No answers; 0 of 37 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
Energy Monitoring: 25 of 37 known answers are Yes
Power: 68% among explicit Yes/No answers; 0 of 37 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
On Off Button: 35 of 36 known answers are Yes
Features: 97% among explicit Yes/No answers; 1 of 37 devices have no resolved answer. Check the specifications for this model’s conditions.
Brand representation in this directory
10 of 37 models are from Sonoff
Counts plugs listed here, not sales or market share. Catalog inclusion does not imply a recommendation.
Side-by-side specification comparison
Compare Sonoff S31 WiFi Smart Plug vs Similar Plugs
See how Sonoff S31 WiFi Smart Plug stacks up against other plugs 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.