I purchased this to replace the original rocker switches and to eliminate the use of the limited SwitchMate device. SwitchMate is good but you can’t communicate with it outside of your home’s Wi-Fi network. So if I want to turn on the outdoor lights while away I couldn’t.I needed more control. I found this switch set.Do NOT get this unless you are a technician or can get a technician to do the install. This is not for the novice. The included instructions are not enough and the included wires are not of the needed size. I tried to install myself but after 2 days of trial and error I ended up calling an electrician, watching him I realized that it over my head. It required my tech to use additional wires on the ground and the neutral just to connect those, the line (power) was kept on the middle original switch and from there shared to the load on the 2 new switches. You really have to know what you’re doing it not as simple as, take that wire put it here, and take that wire and put it there.Wires had to be added to extend reach, good grade (20g) not the cheap ones in the box (DON’T USE THOSE).I had 2 days of frustration and he installed it in about 2 hours but even he had a time with the wires and getting everything squeezed into the junction box. I also found out that nothing in that particular box was grounded. A layperson would have never seen or rectified that. My future project now will be to check all the other switches in the house to make sure that they have a negative wire attached.Connecting to the existing SmartLife app was simple. Now I can control the outside lights at will. The best part of 2020.See pics (yes, I label everything - helps guests use the correct switch w/o having to guess). Used two in the front and one in the back.2 week update: still working great, absolutely no problems. They follow the schedule I made for them, turning on and off. Loving these switches.***Anyone interested in my SwitchMate switches, find me on ebay "TechSis"??