SONOFF iPlug Series Wi-Fi Smart Plug – S40 & S40 Lite


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【Energy Consumption】S40 joins Alexa Energy Dashboard, you can view overall or individual device energy consumption in the dashboard.
”eWeLink-Remote” Control】S40/S40 LITE is a smart plug with the gateway function of “eWeLink-Remote“. If you want to use the “eWeLink-Remote” control function, you need to use it with the S-MATE or scene remote controller R5.
【Safe&Reliable】ETL and FCC certified. It has strong flame-retardance, durability, over-load protection, anti electricity shock, and super insulation.
【Compact Size】Its small body ensures the adjacent outlet position is reserved to use when plugged into the socket, taking up little space only.
【Bluetooth Pairing】Pairing in seconds. Quicker to access your smart home.

Note: The Electricity statistics function is not available for S40 Lite.

Click to view the plug types in different countries (The picture provided is for reference only. The actual plug type is based on the one you used).

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Customer Service Guarantee


S40 & S40 Lite Wi-Fi Smart Plug, as the new beginnings of the SONOFF iPlug series, has passed ETL and FCC certification. The plug and play smart plug provides you smart control, such as APP remote control, voice command control through Amazon Alexa and Google Home, giving you the ability to schedule the working time for your devices. Not only the eWeLink App, but you can also check the energy consumption of the connected devices through Alexa Energy Dashboard in Alexa App, so you can always know how much energy do your devices consume.

The V0 flame-retardant enclosure ensures the smart plugs work safely with your lights or home appliances. Compared with other smart plugs, it can work well for a long time even though the working current reaches 15A. The durable plug head has frequently been tested and improved to ensure it will not be conductively carbonized when the powered voltage is up to 400V. To ensure further safety in use, it adds extra strong over-load protection, anti-electric shock performance, and short-circuit protection.

Designed with a small and compact structure that will not occupy the adjacent outlet position when two ones are used on the same socket. Similarly, it keeps the basic smart control that you can share the plugs to your family together, and use it to control many home appliances through the smart scene, also you can make it keep the status of power failure when the power is restored.

Note: If you want to know whether plug type is applicable in your country, please read here.

Package includes :
1 x S40 / S40 Lite
1 x User Manual



Additional information

Weight N/A
Dimensions N/A

S40, S40 Lite

Working temperature



IEEE 802.11 b/g/n 2.4GHz

Type B Max. Load


Type A Max. Load


Type B Input


Type A Input


Casing material




Product dimension


Plug Type

Type A, Type B

Customer Reviews

Based on 3 reviews
Jose Padilla
Cumplen con su función

Es excelente y cumple a la perfección con su función. Evita que me levante de la cama.

Jason Bottjen
Works, but no lan/local control like previous models

Device works fine from the app, but there is no lan/local control like previous models, which is a huge disappointment. Will not buy again without lan control.

Hi, Jason, S40 supports LAN control now.

Andrei Bucsa
Very nice and slick design

The design is slick, works great but be aware, it cannot be grouped with other switches or added as widget on NS panel.

Hi, friend, S40 can be grouped with other switches and added as widget on NSPanel.

SONOFF iPlug Series Wi-Fi Smart Plug - S40 & S40 Lite