TECKIN 3 Way Smart Wi-Fi Light Switch Works with Alexa, Google Home and Siri, Neutral Wire Required, Control Lighting from Anywhere, Easy in-Wall Installation,No Hub Required(NOT 2 Pack)

It took me a while to figure out that these two switches must be used together on the 3-way. Here's the kicker: you really need only one of them. That's what I did using switch A.But when I went to use the other (B) on a different 3-way, it worked fine electrically but will not register in SmartLife despite having a different ethernet MAC address. So the second switch is USELESS and unnecessary.Except for this major damage to the value proposition, I do really like the way these switches work and how well they are built.The 1-pole switches obviously don't have this issue.Another customer recommended Treatlife 3-way switches which require only single switches. I have purchased some of these and found that they work as advertised but have a little bulkier, cheaper frame.Update (11/18): TECKIN has told me that they are very interested in fixing this issue.

This Tekin SR42 3-Way WiFi Light Switch item comprises two wall switch units (which I selected over the singe 3-way WiFi switch alternative product because these units each have a useful/nice LED status indicator). I set them up in the SmartLife app (you only need to do that once for both switches). While I selected the "Switch" type according to the manual, the default setup mode did not work, so I had to use the Alternative/AP mode (perhaps because we need to select the "Socket" device type, as an earlier reviewer suggested?). While the setup successfully registered the WiFi switches in the SmartLife app, they operated incorrectly and strangely (including continuously illuminated red LED indicators). The problem was that I had not noticed that the two switch units are different from each other (as I eventually learned reading one of these reviews). One unit (A) needs to be connected to the Hot Wire in the source junction box and the other unit (B) needs to be connected to the Load Out in the destination junction box that connects to the light. The manual should more clearly call this out with an "ATTENTION" note, as it does for other notifications. Also, the failure symptoms of swapping the units should be listed int he manual's FAQ/trouble shooting section. Also, since it's not uncommon for a switches to share a junction box with other switches, resulting in a large bundle each of ground and neutral wires, it would be useful if two larger screw-on caps were supplied. Nevertheless, overall, I'm happy so far with the reliability of the units so far. (Btw, the wiring diagram on pg. 03 differs from the schematic on pg. 04 of the manual -- the two "traveler" wires are swapped between the two diagrams. It doesn't seem to matter, but it's odd that they're inconsistent).

Be aware it's not two separate switches for different lights - it's two 3-way switches that control the same light.It will also NOT work if you only replace one of the regular switches with just one of these smart ones - it's an A-B pair that requires both to be installed. Just one will work manually, but would not connect to wifi.Having said all that, it's a great smart switch to replace a 3-way regular switch. Materials are very high quality, instructions are pretty basic but just google "how to install 3way smart switch", plenty of tutorials.I've replaced most of my light switches - both regular and 3way - with Teckin smart switches and it works perfectly in a house with a ton of other smart devices.The Smartlife app that's compatible with these switches is great - you'll need to install it to initialize the switches, but then they're controlled via Alexa or Google Assistant. The best part of the app is the Automation - you can set up that when you turn on or off one light, another would immediately also turn on or off. This was especially useful for me since my living room lights are, for some weird reason, split between two switches in different places of the room (not even a 3way switch, just two switches that each control half of the spot lights). I've setup the automation to simply turn on or off both lights whenever either of the switches is turned on or off.It's been about a year since I've started using the Teckin wifi switches and they're running absolutely smoothly.

I have installed quite a few smart switches in my house over the last couple months. I however could not do the same for the stairs as they are 3 way switches. I therefore purchased these ones.They arrived very well packaged, with everything (short of a screwdriver) included. Installing them was very straightforward as I was replacing regular (already installed) 3 way switches. These are true 3-way switches (they have 2 traveler wires). I am not an electrician, yet I had no difficulty installing them (I just followed the clear directions).Since my house is fairly open plan, I use the lights in the stairs to illuminate the center of the house. This helps my kids feel safe (I live in a very safe area, but I have young kids), yet I can turn off the stair lights from my bed at night without any inconvenience.

Once install was completed these function very well. The directions provide instructions and drawings so that you can remove your old 3-way switch and add the new ones one wire at a time; which would be the easiest way to do things. I, however, did not choose the easy way. I hastily removed my old switches without paying attention to what wires went where. This led to some failed trial and error on my part; eventually I decided to look at the instructions again. Fortunately, the Teckin smart switch instructions come with a schematic of how a 3-way switch operates and with some attention to those details, I was able to successfully complete the install. The smart switches are easily recognized by the Smart Life app and easily added to the Amazon Alexa app to enable voice control. Fits right into my smart home environment. Would recommend.