







Product description
SONOFF S40 15A WiFi Smart Plug with Energy Monitoring 
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

1 Energy Monitoring
2 SONOFF Energy Dashboard
3 Alexa Energy Dashboard

The SONOFF S40 only works with 2.4GHz WiFi, not 5GHz WiFi at all. Make sure that your network has different sids for 2.4GHz and 5GHz networks and that the device will work properly.You need to download the eWelink APP and connect the SONOFF S40, then connect Alexa or Google Home via eWelink.
You need to connect the WiFi device to the eWelink App first, and then to Alexa via eWelink.
You need to connect the WiFi device to the eWelink App first, and then to Google Home via eWelink.
1 How to connect with Alexa
2 How to connect with Alexa
Control your device from anywhere anytime
Forget to turn off the coffee maker? Just take out your phone and turn it off anywhere.
Share to your family
You can share devices to your family via App so that they can also turn on/off the devices remotely.
1 Remote Control
2 Voice Control
3 LAN Control
4 NFC-Tag Cnotrol
5 Share Control

Safety Design
ETL Certified: The SONOFF S40 has been rigorously tested for safety with ETL Certified ( Control Number: 5017124; ATM Issued: 24-Mar-2022)Over-load Protection: When the limit power is exceeded or a short circuit occurs, the fuse automatically fuses to protect the deviceHighest Flame-retardant: The Most flame-retardant grade V-0 device enclosureUltrasonic Machining: The fine ultrasonic Machining makes the shell non-removable and more secure
Note: The SONOFF S40 only works with 2.4GHZ WiFi, not 5GHZ WiFi at all. make sure that your network has different sids for 2.4GHZ and 5GHZ networks and that the device will work properly.
Monitor Energy Consumption: Keep track of real-time power, current and voltage of your appliances on App.and Measure your appliances’ power consumption for 180-day daily/monthly energy usage data and total electricity cost
Works with Alexa & Google Home,IFTTT Supporting: Link “eWeLink Smart Home” skill. You can directly ask Amazon Echo/Echo Dot/Amazon Tap to turn on/off your SONOFF devices.Link “eWeLink Smart Home” on Google Home app, start to voice control your SONOFF devices on Google Home
Smart Remote Control Plug: You can remotely/timely control ON/OFF any connected home appliance via APP eWeLink on your smart phone or tablet. No distance/time limitation
Set time schedules for the lights and home appliances: You can set countdown/single/repeat timers to auto-turn on/off the WiFi controlled outlet on App. One tap ON/OFF Energy Saving
Share control of devices to others: You can simply share control of your home appliances to others so that they can also turn on/off the devices remotely
$29.99