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SONOFF

SONOFF S40 Lite 15A WiFi Smart Plug ETL Certified, Smart Socket Outlet Timer Switch, Compatible with Alexa & Google Home Assistant, IFTTT Supporting, No Hub Required 4-Pack

    • Based on 557 reviews
Condition: New
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$26.99 Why this price?
Holiday Deal · 3% off was $27.89

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This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Dec 24
Order within 12 hours and 13 minutes
Available payment plans shown during checkout

Size: S40 Lite 4-Pack


Operation Mode: ON-OFF-ON


Current Rating: 15 Amps


Operating Voltage: 120 Volts


Contact Type: Normally Open


Connector Type: Plug In


Brand: SONOFF


Control Method: App, Voice


Connectivity Protocol: Wi-Fi


Unit Count: 4.0 Count


Operation Mode: ‎ON-OFF-ON


Current Rating: ‎15 Amps


Operating Voltage: ‎120 Volts


Contact Type: ‎Normally Open


Connector Type: ‎Plug In


Brand: ‎SONOFF


Control Method: ‎App, Voice


Connectivity Protocol: ‎Wi-Fi


Unit Count: ‎4.0 Count


Manufacturer: ‎SONOFF


Part Number: ‎BU1F74D5282


Item Weight: ‎13.1 ounces


Package Dimensions: ‎6.5 x 4.8 x 1.73 inches


Size: ‎S40 Lite 4-Pack


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: April 11, 2022


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Dec 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • these things are great
Size: S40 Lite 2-Pack
I got my first Sonoff switch a few years ago. Had to wire it up myself, but it worked well. These S40s are terrific. Just plug 'em in. The connection is established with Bluetooth, and from then on they're connected to the internet through the local router. Using eWeLink, you can turn things on and off in your house from anywhere in the world. Several years ago, it was disappointing that eWeLink was a phone-only application. But that's fixed. You can now have the app on your computer to control these guys as well. The S40s are dead-nuts simple to use. Once programmed, you can unplug them, and plug them in anywhere else in the house without changing anything. It's nice that they're great, but they're also available at bargain prices. Cheap thrill. Note that eWeLink can be connected to Google Home, so you can run all of these devices through Google Home. VERY IMPORTANT: You can get cheap knock-offs of these, but they DO NOT WORK with eWeLink, and you need to download a separate app to connect to Google Home. So once you get started using Sonoffs, don't try to expand using these knock-offs. Stay with Sonoff. ... show more
Reviewed in the United States on October 31, 2022 by Daniel
    • Fairly easy to load a custom firmware
Size: S31 Lite 1-Pack
I purchased this device because it was capable of running custom firmware like Tasmota and ESPHome (which do not require a cloud connection). The installation process was fairly easy. The gray side piece can pop off, and then two edge pieces slide out. After that just remove a few screws and it opens. I was a little disappointed that the serial connection points were not holes like some of the other Sonoff products I have used. However, I managed to apply the firmware without soldering by taping together a row of jumper wires and pressing them firmly against the contact points while the initial flash process ran. After that, I simply put it back together and it's working perfectly with the custom firmware. ... show more
Reviewed in the United States on May 5, 2022 by Jason
    • Easy to setup and use.
Size: S40 Lite 2-Pack
Easily connects to Wi-Fi with downloaded ap.
Reviewed in the United States on August 20, 2023 by Rocky Pyrdeck
    • Flashing Tasmota (for Home Assistant etc) - Some tips
Size: S31 Lite 4-Pack
These work great for flashing Tasmota, but you need to be familiar with the flashing process. Here are some tips: - Highly recommend those rubberized "Mini probe test leads" to clip between the board and FTDI flasher to avoid the annoyance of doing a hard solder just to flash the device. - Any basic FTDI-type USB flasher will work, just make sure it can provide 3.3v (make sure to set it to 3.3v before connecting!). There's a cheap FT232RL $5 one on here--make sure you have any requisite USB connector for it (mine needed the uncommon USB mini adapter). - Opening the Sonoff isn't terrible difficult, use a spudger or mini flathead screwdriver to pop off the grey cap on the side facing the plug. Remove the white sliding things, and be gentle doing the 3 screws since they strip easily. - Grab the latest tasmota.bin from Github. There are multiple tools that can flash it, I used ESPHome Flasher. - Flashing: 1. Connect GND, RX, and TX probes between the Sonoff and your FT device, but don't connect VCC just yet. GND goes to GND, but RX goes to TX and vice versa! 2. Plug in FT device to computer. 3. HOLD DOWN button on the Sonoff device and connect VCC--if your FT device has LEDs they should flash but Sonoff should not. 4. Refresh ESPHome Flasher and it should detect your device on the USB port. Load the firmware .bin and flash it. 5. If successful, put the Sonoff back in its housing and plug it into an outlet to test. Use your phone to connect to the temporary AP so you can give it your wifi details. That's it! Future updates can be done OTA. ... show more
Reviewed in the United States on March 10, 2022 by Pat
    • Works great and easy install.
Size: S40 Lite 4-Pack
So far, I been happy with these plugs.
Reviewed in the United States on July 3, 2023 by young
    • No different than any other
Size: S40 Lite 2-Pack
This plug turned out to be the same as any other that I've wasted my money on. I keep reptiles, and want to be able to control the lights from my phone, but every one of these plugs that I've tried ends up being a waste of money. I can't get them to connect to anything. Alexa can't find it, my phone can't find it. I follow the directions exactly, yet it just doesn't connect. Total waste of money and time. ... show more
Reviewed in the United States on August 19, 2023 by Jamie
    • QR Code to network this device
Size: S40 Lite 4-Pack
If you are not persistent, you will not easily connect this device to your wifi network. What I found works best is to scan the QR code on the device, and VOILA, the magic happens. Going the more conventional route by using the tradtional methods to add this device to your wifi network will result in unneecssary frustration IMO - I speak from experience. ... show more
Reviewed in the United States on April 8, 2023 by jscrenci
    • Not Zigbee compatible
Size: S40 Lite 2-Pack
Use caution when ordering these. I didn’t realize there were two versions of the S40 Lite, Zigbee and Wi-Fi. I bought this version by mistake, and while they’re returnable, I don’t have a UPS store near me and Amazon won’t provide a free return label for a pickup. The Wi-Fi version does not seem to be as well supported in home assistant, the add on provided for it only seems to provide a Lovelace card and not a proper device, so as far as I can tell so far it can’t be used in automations. The s40 version also can’t be flashed with alternate firmware, so it’s usability with home assistant is limited. ... show more
Reviewed in the United States on March 14, 2023 by cma

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