Internet #310927678

Model #WLS040-2A

Store SKU #1004723959

Smart Light Switch

Frequently Bought Together


Product Overview

The WeMo smart light switch gives you total control over your lights with no subscription or hub required. Turn lights on and off from the wall, App, or with your voice using Apple HomeKit, Amazon Alexa or the Google Assistant. From porch lights to ceiling fans to recessed lighting, WeMo light switch can control nearly anything a traditional light switch can. Easily set schedules and timers to make your life truly comfortable. Schedule lights to turn on at a certain time or sync them to the sun. This way, you'll never come home to a dark house. Or group multiple WeMo-controlled devices together and control them all with a single 2-second press on your light switch. Light switch also can get your home vacation ready with away mode, which randomly turns your lights on and off for peace of mind. When paired with a voice recognition device or service, sold separately.
  • Control lights from the wall, the app or your voice
  • Works with Apple HomeKit, the Google Assistant and Amazon Alexa for hands-free control
  • Easily set automatic schedules and timers in the app
  • Group and control multiple WeMo devices with a 2-second press
  • Randomize lights to make it look like your home even when you're not
  • Neutral wire required, not compatible with 3-way switches

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Smart Light Switch
NameDecora Smart Light Switch with Z-Wave Technology Wallplate Included, WhiteCaseta Wireless Smart Lighting Switch for All Bulb Types or Fans, Push Button, WhiteLight Switch (2-Pack)Smart Light Switch
Switch StyleSpecialtyPush ButtonPush ButtonPush Button
Number of SwitchesSingleSingleSingleSingle
Mounting TypeIn-WallIn-WallWall MountedIn-Wall
Voltage120 volt120 volt120 volt120 volt
Electrical FeaturesProgrammable,Remote ControlIndicator Light,ProgrammableWall Plate IncludedProgrammable,Remote Control,Wall Plate Included
Works WithAlexa, Samsung SmartThingsAlexa, Apple HomeKit, Ecobee, Google, Google Assistant, Logitech Harmony, Lutron, Samsung SmartThings, Siri Alexa, Google, Siri, WeMo
Function TypeOn-OffOn-OffOn-OffOn-Off
Switch TypeMaintainedMaintainedMaintainedMaintained
Amperage (amps)155 A15 A15 A
View ProductView ProductView ProductView Product



Product Depth (in.)
4.1 in
Product Height (in.)
1.64 in
Product Width (in.)
1.68 in


Amperage (amps)
15 A
Color Family
Electrical Features
Programmable,Remote Control,Wall Plate Included
Electrical Product Type
Function Type
Mounting Type
Number of Switches
Power Options
General Purpose
Remote Access
Remote Access
Requires Hub?
No Hub Required
Smart Home
Smart Home Enabled
Smart Home Protocol
Switch Style
Push Button
Switch Type
Voice Control Hub Required
No Hub Required for Voice Control
120 volt
Works With
Alexa, Google, Siri, WeMo

Warranty / Certifications

Certifications and Listings
UL Listed
Manufacturer Warranty
3 Year

Questions & Answers


on a wireless ceiling fan w/lights, can this switch control the fan and lights separately???

Asked by daniel September 6, 2020

Hi, daniel. The Wemo Light Switch (WLS040) allows you to control lights that are wired to the same circuit with the Wemo Light switch.

Will this switch work with a motor?

Asked by SausageKig03 August 30, 2020

Hi, SausageKig03. The setup has not been tested, however, it may work if the wiring is properly connected and if the fan do not exceed the maximum wattage. Moreover, the speed won’t be controlled.

Can this be used to replace an outdoor switch for pool light?

Asked by Jeanne August 18, 2020

No, Jeanne. The Wemo devices are only designed for indoor use.

I want to hard wire into the receiver and out to six led recessed lights. Will this work with this product? Suggestions?

Asked by pvmlaw August 3, 2020

Hi, pvmlaw. We'd like to have a better understanding on your inquiry. Please reach out at to better assist forward. Indicate your contact details and the link to this post when you reach out.

Can you use any light bulb?

Asked by 3747282 June 5, 2020

Hi. The Wemo Light Switch (WLS040) supports any non-dimmable bulb (CFL/Incandescent/LED).

Does this work with the Nest system ?

Asked by John May 8, 2020

Hi. No, it is not compatible with Nest.

Ia this a 3way switch

Asked by Jt March 1, 2020

no, this one isn't. I think there may be a separate three way model

Can this be used in a dual switch box?

Asked by TheSquirrel December 15, 2019


Customer Reviews

  • 93 Customer Reviews
  • 4.2 out of 5 stars overall
75% of customers recommended.
Overall Ratings
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Just buy a regular light switch instead
I bought a couple of these for use as IFTTT wall controllers (controlling several WiZ lights), but their response time is so slow that it's basically unusable. On average, it took between 30 to 60 seconds for my lights to turn on after I pressed the switch, and that's with a very good home WiFi system. Note that I was not using the switch itself to provide power to the lights (just cap the red wire off, it works fine), but rather had them send a command to smart lights through IFTTT so I could trigger different color scenes. Even if you intend to use them as normal smart switches, the WeMo app has a horrible user interface that allows for very little scene / whole home control. I would strongly recommend Leviton's Wi-Fi switches over these, as their IFTTT response time is a few seconds at most. Not to mention, their app is vastly superior to the WeMo app.
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Response from Linksys StaffAugust 27, 2020
Hi Chase,

This is definitely not the experience we want for our customers. Allow us to have our Product Experts to get in touch with you for further troubleshooting to get the device working as expected.

Just send us your contact details at so that we can escalate your case. Don't forget to include the link to this post as a reference.

We hope to hear from you soon.


Wemo Support linksys
Need switches cover plate.
Customer review from logo
Nice switch but if you're installing 3 switches Wemo should make cover plates for 2 and 3 switches.
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Mesquite, NV
Great Smart Home Addition!
Customer review from logo
The Wemo Smart Light Switch is a great addition to any home's smart technology network. I used these switches for exterior lighting that I wanted to control with a nightly schedule and they work perfect. The switch looks grest and was fairly easy to install. The only downside to this product that kept it from a five star rating was the App setup process. I'm consider myself to have intermediate technology skillls and connecting this product to my network took quite a bit of effort that was not explained in the user manual. However, once connected to my network the App is easy to use and setup.
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Novato, ca
Adding another switch
Customer review from logo
Couldn’t tell between this one and the older single poke light switch so I chose this one. I works the same as my other 15 that I have in my house. [This review was collected as part of a promotion.]
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Love my Wemo devices!
Customer review from logo
I have single pole switches, dimmers, and 3-way switches as well as receptacles from Wemo and I am extremely happy with them all. If you want something that’s plug-and-play then this is it. As long as your wifi signal is good you don’t need a hub or anything. Setup on the app to set timers for sunrise, sunset, or any time between is simple even without HomeKit, Alexa, or Google home (which I also have so voice control is easy too). Worth the money compared to some cheaper versions which do less.
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Awesome product
Customer review from logo
I bought this a week ago to control my front porch light. Super easy to wire and love the feature where you can set a rule to turn on and off with sunrise and sunset.
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i got this so i could be lazy and tell my google home to turn on my lamp and overhead light in my room. well it doesnt work. google home app will not link with wemo account/app. the box lies. after searching the web and wasting 4 hours of my time i have found that this has been a issue for over a year now with zero fixes. works great using the wemo app but not at all what i bough this for. i dont want to use a my phone or app. i want voice command. returned for full refund
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Response from Linksys StaffOctober 18, 2020
Hello, rex,

When connecting your Wemo devices to the Google Assistant/Home app, you may have to check its availability on the Google App. Once done, you may now then connect them and follow the on screen instructions once you tap the ready to verify. We could also have our Product Experts help you with it. We understand your thoughts and in case you have future concern. Please feel free to let us know by visiting our support sites and the info can be seen in our Amazon Profile. Send along with your contact info too and the link of this review, for our reference.


Wemo Support linksys
Unreliable_Horrible_always needs to ne reset
I have had two wemo light switches FOR A FEW YEARS. Since earlier this year whenever there is a power outage and it loses connectivity with its access point it will never re-establish a connection. It has to be reset EVERY TIME. Just a horrible product. The technology in this has to be from 2004. Straight garbage. I have an enterprise network setup and these wemos never maintain a connection after any kind of disruption. I upgrade the firmware on one access point migrate connections over to another access point but wemo nope. Always needs to be reset. Just a garbage product. Horrible code. WEMO Fix the reliability of you smart offerings. Im jumping ship off of these devices.
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Works well enough. They tend to go off line often...
Works well enough. They tend to go off line often and I have had to reset it a couple times now within the last two months. Other than that, no complaints.
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Response from Linksys StaffOctober 9, 2020

You might want to check if the switch is running on the latest firmware and if it gets a stable connection from the router. If all is well, get in touch with us at along with your contact information and a link to this post as our reference so our Product Experts can help you investigate the cause of the challenge.


Wemo Support linksys
Version 2 Products are GREAT!
Customer review from logo
The version 2 of the WEMO products make it much easier to install and manage the switches. I am thankful that I can install and manage switches from different locations. The integration with HomeKit and Alezia is also better.
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