meross 3 Way Smart Switch, Smart Light Switch Supports Apple HomeKit, Siri, Alexa, Google Assistant & SmartThings, 2.4GHz WiFi Light Switch Neutral Wire Required, Remote Control Timer 2 Pack

To start with, I am very happy with my purchase thus far. It was priced right, easy to install (took about 5-10 min), and works very consistently.I have started to get more into smart devices recently, and had a problem I needed to solve. I own a 3-story townhome, with a deck on the 2nd/living room floor. There is a bright light over the deck, but there is no light switch near it or on the same floor. For whatever reason, it is controlled by (2) 3-way light switches: one on the top floor in the bedroom, and one on the bottom floor in the utility room. Why would the light be configured that way? I have no clue. To turn it on or off, I have to go either upstairs or downstairs. So here is where the idea of a smart 3-way light switch came up.The idea was to have it controllable while out on the deck, but still controllable from the light switches. Also, as I get more into the smart devices, I was wanting Apple HomeKit support as I am being heavily persuaded by loved ones to jump over to the Apple side of things and away from Android. Although I'm not fully convinced to make the jump, I wanted support for both options just in case.I purchased this 3-way switch from Meross for about $28, which was great compared to others I had seen that supported both Android/Alexa and Apple Homekit. You only need to replace one 3-way switch to make it smart, so I chose the one in the utility area on the bottom floor.At first I was a bit apprehensive due to not having messed with 3-way light switches before, and rarely have had to change a light switch (primarily rent). So a 3-way was a bit confusing to me. However, Meross made it quite simple with their instructions and wiring diagram. I have attached some photos, 2 of which I've added some notations for some guidance that I learned along the way. Also, your first step should be to shutoff the breaker in order to kill power to the light switch. Safety first.I was not familiar with "Traveler" wires that are used with 3-way switches. I found that these red and black "Traveler" wires connected to the original standard 3-way switch using brass-colored screws. This made them easy to identify. You just disconnect the wires from the original light switch and use the provided wire-nuts to connect them to the wires coming out of the new switch. So here is how it goes, referencing the marked-up wiring diagram and light switch photos I've attached:L = Live = Black wire connected to original light switchT1 & T2 = Traveler 1 & 2 = Red and Black wires connected to brass screws on original light switchN = Neutral = White wire. The neutral wires should be bundled/connected with a wire nut and stashed behind your original light switch, but not connected (mine wasn't). Just undo that wire-nut and add the white Neutral wire from the new switch, then screw on the wire nut again to bundle⏚ = Ground = Green wire connected to original light switch (If you have one. My original light switch didn't have one)Hopefully that gives enough detail for others (like myself) who have never done this before. Simple enough.So, a few notes: the plate that comes with this switch is slightly skinnier than your standard light switch wall plate. It didn't seem to be a big deal for me, but just something to keep in mind. Also, you have to use the cover plate that comes with the new switch. It is designed to snap onto the switch and doesn't screw on (likely because there are more to the internals of a smart switch to house the additional electronics you don't have with a standard switch). Just something else to be aware of.This was fun to do and really helped solve my problem. I brought it into my Alexa app and I can control the light from my phone or Echo now and don't have to stop drinking on the deck!ADDED BONUS: If you use Alexa and configure this as a "light", you can use it with Alexa Guard, which allows an "Away Mode" with automated lighting. The Alexa Guard will use sunrise and sunset times (based on your location) to know when it starts getting nighttime, and will use some logic to turn your lights on and off automatically to make it seem like someone is home. With my outdoor deck light, this is easy for anyone outside to see and will be a great deterrent and protection. I already have my neighbors confused on if I'm home or not. Working as intended!

This is a copy of my review of the single pole version of these switches. I have been replacing my light switches with these Meross smart Wi-fi wall switches. I got a few to try them out and see how well they work as a replacement for my smart bulbs. The smart bulbs (3 different brands, including the supposed expensive good brand) would keep loosing connection. They would be unresponsive more often than not. I was getting so tired of Siri "not hearing back from the device" so I decided to make the switch to smart switches, and boy am I ever glad I did. No more problems with loosing connection since I started using these! Also, some really cool features are as follows:If you are replacing a 3-way switch setup, you only need to replace one of the switches if you use these smart switches. You can set up an automation to make it so that the lights switch off automatically after a set amount of time, or you can make it so that whole groups of lights come on if you switch on one etc. You can use this functionality to effectively make unrelated lights work kind of like they are part of a 3-way light switch. Maybe best of all is there is no longer a problem if somebody switches off the light switch (unlike the dumb smart bulbs that get completely screwed up if somebody accidentally forgets and turns off the switch). I also like how I can decide on a per-switch basis, if I want the little indicator light to work as a night light, a power indicator, or to just stay off (this functionality is accomplished via the Meross app, and that's about all I have used their app for so far, it's easy to add your switches to the Meross app if you have finished setting them up in homekit first). So far I have found these switches to be very reliable. Setup can be done completely through homekit and it works pretty seamlessly. Out of 12 switches so far (both 3-way and single pole) I have only had one that had any hiccups while trying to set it up, and after resetting the device, setup went smoothly on the second try. Please note, these switches require the neutral wire, so they won't work if your house doesn't have neutral wires in the switch boxes.On a side note, I noticed that amazon "clip to save" coupons pop up every day or so with these, so don't buy them all at once. Buy them one set per day so you can keep getting that coupon each time!

I had a heck of a time adding this switch using Homekit. It would connect to my WiFi no issue but would not connect to Homekit. I have an older WiFi access point (Ubiquiti AP-AC-LR) and found someone on the UniFi form that said these switches would not connect well to 2.4GHz channel 1 for some reason. I was in fact using channel 1 and I found that when pinging the switch, I would get significant packet loss. I changed the WiFi access point to Channel 3 (yes I know you should use channel 1,6 or 11 to minimize overlap) and it connected immediately to Homekit and I had zero packet loss when pinging. I had no issues with other smart switches with Channel 1. Not sure if it is an Access Point Issue or the Meross Switch issue. So if anybody else is having issues, make sure not to use Channel 1 for your 2.4GHz WiFi. After the change it has been working great.

Works very well. Using in HomeKit. Connected quickly and responds quickly. Only on/off no dimming. Only complaint is the size. A little big if you have a crowded box.