Device profile · Specifications & compatibility

Sonoff WiFi Smart Plug S40 Lite

Sonoff · Plugs · Model S40TPB Lite

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  • Sonoff WiFi Smart Plug S40 Lite lists Maximum Load Power: 1500W; 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
2021
Recorded warranty
1 year
Dimensions
76 x 40 x 32 mm
Weight
74g

The details that shape your choice

Sonoff WiFi Smart Plug S40 Lite Quick Features

Start with these specifications, then check the full details and conditions below.

All specifications →
Maximum Load Power
1500W
Maximum Load Current
15A
Plug Format
Type B
2.4 GHz Wi-Fi
Yes
Bluetooth
For Pairing
Automations
Yes

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Which device fits your setup?

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From specification to decision

Sonoff WiFi Smart Plug S40 Lite: 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.

About our sources and comparison method →

Questions About Sonoff WiFi Smart Plug S40 Lite

What is the maximum load power of Sonoff WiFi Smart Plug S40 Lite?

Maximum Load Power: 1500W. 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 WiFi Smart Plug S40 Lite?

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 WiFi Smart Plug S40 Lite use?

Plug Format: Type B. Match the physical format and electrical rating to the intended country and outlet.

View Plug Format specifications →

Does Sonoff WiFi Smart Plug S40 Lite 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 WiFi Smart Plug S40 Lite 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 WiFi Smart Plug S40 Lite 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 →

22 of 22 specifications · 4 sections

Power7 fields
Power specifications
Plug FormatType B
Maximum Load Power1500W
Maximum Load Current15A
Load Voltage100V
Overheat Overload ProtectionNo
Energy MonitoringNo
Usb ChargingNo
Connectivity6 fields
Connectivity specifications
2.4 GHz Wi-FiYes
5 GHz Wi-FiNo
BluetoothFor Pairing
Z WaveNo
ZigbeeNo
ThreadNo
Features3 fields
Features specifications
On Off ButtonYes
Zigbee RouterNo
AutomationsYes
Integrations6 fields
Integrations specifications
Google HomeYes
AlexaYes
Apple HomeSONOFF Hub required
Details & conditions

SONOFF 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.

SmartThingsYes
Home AssistantYes
MatterSONOFF Hub required
Details & conditions

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.

How this device compares

Sonoff WiFi Smart Plug S40 Lite 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

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.

Recorded feature coverage

Automations: 37 of 37 known answers are Yes

Features: 100% among explicit Yes/No answers; 0 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.

What Should You Verify Before Buying Sonoff WiFi Smart Plug S40 Lite?

These checks describe plugs requirements. Confirm each one against the exact model’s current manufacturer documentation and your installation.

  1. Match the plug format, voltage and rated load to the appliance.
  2. Check the appliance and plug instructions before automating power.
  3. Measure clearance around adjacent outlets.
  4. Verify energy monitoring, hub requirements and power-restoration behavior.

Side-by-side specification comparison

Compare Sonoff WiFi Smart Plug S40 Lite vs Similar Plugs

See how Sonoff WiFi Smart Plug S40 Lite 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.