SONOFF Zigbee Smart Plug with ETL Certified, S40 Lite 15A Outlet, Zigbee Repeater, Works with SmartThings and Amazon Echo Plus, Hub Needed for Amazon Alexa
Original price was: €70.€13Current price is: €13.
Price: $69.99 - $12.99
(as of Sep 29, 2025 02:55:51 UTC – Details)
From the brand
SONOFF
Foster innovation to make life simpler and smarter.
SONOFF specializes in the development and production of smart home hardware and products.
It locates in Shenzhen, which is the largest electronics market in China and the most integrated electronics supply chain in the world. Thanks to our great capacity for innovation, SONOFF is able to offer high quality innovative products at an affordable cost.
SONOFF zigbee Smart Switch
SONOFF Zigbee sensor series
Zigbee 3.0 Standard Protocol
Compatible with more Zigbee hubs developed using standard protocols.
Voice command
Tell your voice assistant what you need, make life smarter.
Interact with your devices via ZigBee Protocol:A compatible ZigBee hub is required to control this plug. Pair your plug to a compatible ZigBee hub such as SmartThings, or Amazon Echo Plus
Smart Control: Use your smartphone to switch traditional lighting and appliances and put your appliances on a schedule
Sunrise and Sunset Routine Support:Set sunrise and sunset routine to turn on or off light
Wide Compatibility & Voice Control: Voice control your home with Amazon Alexa, included Echo, Echo Dot, Amazon Tap. SmartThings
Compact Design: Small and compact body will not block adjacent outlets
Customers say
Customers find the smart plug works like a charm and pairs easily, considering it a great value. However, the functionality and compatibility receive mixed feedback, with one customer reporting poor repeating and transmitting performance, and another experiencing frequent disconnections from the hub.
13 reviews for SONOFF Zigbee Smart Plug with ETL Certified, S40 Lite 15A Outlet, Zigbee Repeater, Works with SmartThings and Amazon Echo Plus, Hub Needed for Amazon Alexa
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Original price was: €70.€13Current price is: €13.
Jonathan –
Works like a charm, quick to react, and fairly quiet
The sonoff zigbee smart plug worked like a charm. It paired easily, although in my case, the plug was near a hub, so YMMV. We’ve used it for a few months without any issues. It turns on within less than a second of activating it in home assistant, and it seems well made. You can hear an audible click when it turns on, though, but I think ultimately this is a drawback of all such devices that likely utilize a contactor to flip the switch. It’s not really noticeable, but if you’re easily bothered by the click, it might be annoying
BobP –
Updated review
18Sep23, I am updating my review giving the product 5 stars. The alleged “failure” mentioned in my original review appears to NOT be problem with the Sonoff 40ZBTB Lite but a strange issue within the ZigBee2MQTT add-on used with the Home Assistant software. It is a bit too involved to fully describe here but the key information is that when the native ZHA networking was used the Sonoff smart plug worked perfectly. With this information in mind, I completely removed the MQTT broker and the ZigBee2MQTT add-on from Home Assistant. Then, re-downloaded these two add-on, reconfigured and the smart plug worked as expected. I provide this information in case it can help someone else. Ignore this original review-> I bought the Sonoff S40ZBTB Lite to add additional range to my expanding Zigbee network (mostly Sonoff devices) as it is a repeater as well as a smart outlet. When first installed it paired quickly with the Sonoff Zigbee dongle I am using and worked well for 3 months and then stopped communicating with the Zigbee coordinator. All attempts to “pair” this device have failed. I was using this with “Home Assistant” but tried Sonoff’s eWeLink app, this also failed to link up with the device. I contacted Sonoff support but have received no help from them ___so far__. If Sonoff support does reply and resolved the problem I will edit this review with any new information. But for now, I am going with a different manufacturer.
RH in SC –
Great value
Updated review from 5 stars to 4.Here’s why:I recently had a power failure. My Soniff Zigbee smart plug was switched on before the power failure, but when the electricity came back on, the smart plug did not. The equipment plugged into it obviously did not, and could not be turned on automatically. There is no option to enable the smart plug to return to the on state after the power came back on.On further research, I found the other brands of smart plugs I own operate similarly, as do most* of my smart switches, so generally speaking, this is a standard for such devices. ‘> *Most.* I have a couple of Zooz Z-Wave smart switches, and remembered that they have a parameter to choose the recovery state if power outage occurs.My gas fireplace does NOT automatically come back on after power comes back on after an outage, but I could program it to if I wished.After my recent problem, I shopped for a Zooz Z-wave smart plug and found that it does have a programmable parameter for its recovery state after a power outage.So the 5 star rating goes to Zooz. Sonoff is dropped to 4 stars.Original review, still valid:Paired right away as a generic plug in my Hubitat Elevation hub. No issues. Great price.
Eric Y –
Works Well as Zigbee Router
I recently started a Zigbee network in my house, using a Sonoff 3.0 USB dongle as my coordinator (Zigbee2MQTT on my QNAP NAS > Home Assistant). I wanted some repeaters/routers so my sensors on the other side of the house had a good signal. I tried purchasing both the S31 Lite and the S40 Lite, and both work very well with the latest version of Zigbee2MQTT (automatically recognized and paired, no need to edit your YAML file). They paired immediately as routers, then I reset my sensors and allowed joining specifically to these smart plugs. The signal strength isn’t the greatest between these and my coordinator, but I have multiple walls between them (coordinator is in a cluttered closet). The repairing my sensors to the routers has increased my LQI on them.I was hesitant to get these at first, because there are a lot of inconsistent reviews on devices serving as Zigbee routers. But they were on sale, so I bought two S31 Lites and one S40 Lite, and all three work immediately. Very happy with the purchase considering the low cost, ease of pairing, and effectiveness as routers. Recommended for anyone looking to extend their Zigbee range using the same setup as me.
P S –
Dead simple to use and add to Home Assistant, just like I wanted.
It was cake to add to Home Assistant, it immediately worked and was easy to use.I have other Sonoff products that have been going for months (or years) and have faith this one will be just as reliable.
Amazon Customer –
Works
Worked great
JustAnotherName12 –
Cannot get it to work with Home Assistant
***Update***After a few days of headaches, countless forum, Reddit and google searches, and perseverance, Iâve finally gotten it to work with Home Assistant. While I could bump it up to 2 stars, the hassle that I had to go through to get it to work and the thought that most people would have probably given up (long ago), makes me think that the rating should stay exactly where it is. Something is amiss with this brand and Iâm not sure what it is.This is the second Sonoff iPlug that I’ve attempted to integrate with Home Assistant/Conbee II and it refuses to make it past the “Starting Interview” phase. It doesn’t matter what I try (or the ideas from forums), it just will not take. Looks like I get to try flashing it to see if that will work or if I have a new paperweight. So far, this has been the only Zigbee device that has given me this much drama…
Good2Go –
Connects easily. Poor repeater. OK plug.
S40 is easy to pair and generally works well as a plug switch. I mainly bought 2 of these to use as repeaters. I have found repeating and transmitting performance to be poor regardless of placement causing periodic issues with sensors connected though this repeater. I have infrequent disconnects from my hub with a blinking green light on the switch. Last night a S40 disconnect thew all connected sensors offline and caused a âopenâ signal for my front door which triggered my security alarm. Not good. Need something that performs better and is more reliable as a repeater.
Albert Mi –
buen producto lo malo es que se necesita un puerto de enlace para conectarlo, y no me fije si te lo mencionan en su pagina
captain’s log4j –
I don’t have a SONOFF hub, but I bought this because I read elsewhere that this could be used with Philips Hue hub. And it does work, with some limitations.- Philips Hue -I was able to pair the SONOFF plug to my Hue hub easily with no issue. The Hue app searched for and found it like any smart bulb. I could then link the SONOFF plug to any of my Hue remote control smart buttons, or set up time based automations for the plug.However, I do not have the option to configure things like the SONOFF plug’s indicator light. Whenever the plug is on, the light rapidly flashes red and green non-stop. Probably, this behaviour can be changed if you have a SONOFF hub.- Apple Homekit -Normally, I can also use Siri to control my Hue devices. But the SONOFF plug does not show up in Apple Home even though it is paired to my Hue hub. Apparently, Apple will only recognize official Hue devices on a Hue hub.- IKEA Dirigera -I was not able to pair the SONOFF plug to my Dirigera hub.I gave the SONOFF smart plug 5 stars because it feels well made and does what it says it will do, as far as I can tell. But if you are using the Apple Homekit ecosystem, I recommend paying a bit more for the Hue Smart Plug instead. Or the Eve Energy smart plug which costs more, but does not need a Zigby hub or Wifi. I can confirm that these are fully compatible with Homekit.
Alec –
Works perfectly and I haven’t had any connection issues.
Kevin –
They work perfectly but everything I install them, all other devices connected to my smartthings hub work intermittently.
Amazon Customer –
This item does have cETLus approval for use in Canada and the US (Electrical approval)Also has a FCC ID for use in the US. (Radio certification)Not identified on the device but seems to have a IC number for use in Canada (Radio certification)The device does not show up in Smartthings under Sonoff You must use eWeLink to add the device