Kasa Smart3 Way Switch HS210 KIT, Needs Neutral Wire, 2.4GHz Wi-Fi Light Switch works with Alexa and Google Home, UL Certified, No Hub Required, White,2 Count (Pack of 1)

Love these smarts switches! Why?Because they just work!Power outages, wifi problems, you name it as soon as they are able, they reconnect and just work as if nothing happened. I have over 20 of these installed in my house and have been totally trouble free since the spring of 2022. I have had them tied to google home and Alexa through multiple accounts it has been totally seamless.However, If I am being critical I would point out the mechanical side of the switch feels somewhat cheap and doesn't not give a satisfying click when pressed. Also the switch is quite bulky on the backside make sure you have plenty of space in your switch boxes, making room for this extra bulk is the most time consuming and tedious part of the install if your boxes are already crowded

This smart switch comes with two sets of switches. Each set includes two wire nuts, two mounting screws, snap-on face plate, wire labeling stickers, and the switch itself. Install is relatively straightforward. I was able to install these in a 3 way dimmer switch configuration and a 3 way configuration. For both, I made sure to install the smart switch at the switch with the hot wire from the main home circuit, rather than any hot wires coming from other switches in the setup. If you install in any of the switches after this first switch then I believe it won't work. Only one switch is needed - the other switches can stay dumb. This also works for a single pole switch (just wire one of the travellers).For the 3 way dimmer, the other switch is the dumb dimmer switch. It works fine after the install. For the 4 way switch, the intermediate switch is the four way and the last switch is another 3 way switch. I also didn't touch these and they worked fine. To find which switch is the first switch, I voltage tested the common wire on the switch (usually has a black screw, bottom right side of the switch when facing it) while operating the switches. The common wire for the first switch will never go to zero (when measuring between it and ground or using a line tester). In my house, this first switch was also usually in the largest gang outlets or near areas with lots of wiring.If your old switch has the wires inserted into a hole in the switch rather than screwed on the side, you have to find a small paperclip and stick it in the even smaller hole next to it. Then you can pull the wire out.The neutral and ground wires in the smart switch are permanently fixed to the smart switch. They can be wired into any existing bundles of neutral (white) and ground (exposed copper) wires in the outlet box. My outlet box had these already bundled together and secured using a wire nut. I just unscrewed the wire nut and added the cables from the switch.The remaining line/hot wire (black) and traveller wire connections are screwed onto the smart switch. There are no wires coming off the smart switch itself for these. I do not believe it matters which traveller wire goes to which terminal. Typically the traveller wires will be bundled into one sheathed wire in the outlet box, while the line/hot wire will be separate. My traveller wires were colored red and black. The traveller wires are screwed onto the top of the switch, and the line wire to the right side.I found the smart switches to be a lot larger than the dumb switches, but they do just barely fit into the outlet box. I had to chip away some drywall compound from my outlet boxes to get them to fit. If your outlet box is metal, you might want to insulate the traveller wire terminals, as I think they could contact the metal box. Setup is very easy with the app. No QR codes to scan. Just go near the switch and follow the instructions in the app. It does not use Bluetooth either. It seems to search for a Wifi broadcast from the switch. For some of my switches I had trouble connecting the first time, but a retry, or reset of the switch (using a small button on the front of the switch) would allow it to work. Alexa integration is automatic once you link the Kasa phone app.The switch itself is not a toggle like a normal switch, but simply a clicky button. When off, a dim white ring lights up the switch. Below the switch are very small reset and restart buttons. Although I only have one switch per three way or four way setup, the app can still tell if my light is on or off.Finally, these have no delay. I have some Kasa smart plugs plugged into switched outlets. With these smart plugs, there is a slight delay when turning on the switch and waiting for the lights to come on. However, with the smart switches, there is no delay. I assume this is because the smart plugs actually lose power while the switch doesn't. I am very happy with these switches. The setup and use is very easy. Install was very straightforward, even though I had not done any switch installs before. These are one of the cheapest smart switches on the market, but they perform excellently.

This TP-Link/Kasa switch replaced a brand new Eaton switch. It was a third the cost of the Eaton switch and so far has performed flawlessly. The Eaton switch would drop WiFi and the process to reconnect was a pain. The Kasa switch was easy to install, but you have to get the install instructions online- a minor inconvenience. Unlike the Eaton switch, two of the connections are “wire to wire,” but wire nuts are provided. The Eaton has screw terminals for all the connections. I like that there is a dim LED light on the Kasa switch itself so you can find it in the dark. The Eaton had an LED also, but it only functions when you depress the switch or during setup. The Kasa switch is a push toggle at the bottom of the switch compared to the Eaton where the top portion of the switch is on and the bottom is off. The Kasa switch works with Alexa although I had to create routines for voice control. It also works with the Kasa app or the Tapo app. I control mine via timers in the Kasa app. So, for only a third the cost, I think the Kasa switch is the better buy.