i knew before that these things are usually pretty big but these are significantly bigger than the Stanley ones. Stanley 31164 Indoor Wireless Remote Control with Single Transmitter, White, 3-Pack for me this really wasn’t an issue but it basically takes up both outlets. the open outlet still has enough room for a simple plug to be plugged in but anything bigger like an iPhone charger won’t fit.
the range is good. i’ve been able to activate it from at least 30 feet without direct line of sight through dry wall. sometimes you have to press it more than once but usually works on the first click. depends on how picky you want to be.
the only down side is that it uses special 12V 23A battery so harder to replace. also the left and right buttons don’t really mean anything. you just have to hit it in the middle. one press = off; next press = on and so on.
i haven’t tried it with any heavy duty appliances so can’t speak towards how well that works but it’s rated at maximum 1200W per outlet.
even with these few negatives they don’t really bother me and they work extremely well for my purpose at this price range.
I use it with floor standing lamps with CFL bulbs when I am not using a 3 way bulb to allow for instant on instant of turning the nob 3 times. It works really well and had good range of at least 30 feet. I deducted 1 star because of the size. It is really big and essentially makes the 2nd outlet unusable unless you’re using a small, basic plug which is annoying. Also the plug on the back cannot be rotated to fit into certain outlets/spaces which would be a nice plus. If they could make this slightly smaller (like the Stanley version) and the plug able to be rotated then it would be perfect.
I have not tried 2 separate ones in the same house as the 2 I have are in 2 different homes.
The receivers are a bit larger than I had hoped but doable. Had to add a couple outlet strips. Nice to be able to control 5 outlets with one remote control. I reserved the 5th one for our yearly Christmas tree.
I use it to light up my accent LED lights behind my IMAC and my Flat Screen TV. It is very responsive. I dont even need a line of sight to operate these. I must say that it does the job well.
It is very economical and ideal to have 5 outlets and 1 remote. No need to carry multiple remotes.
I have setup 1 remote outlet to my Modem. Sometimes my kids will not stop using the internet. I just hit the switch to shutdown the modem and not the router. Meaning, they are still connected to the router but without and internet connection. 
I highly recommend this to all. Trust me, you will definitely find a use for it. These are better models than what Home Depot and Lowes sells.
About the seller, I spoke to them on the phone and they are very professional, polite and most importantly, they listen. I hope everybody is like this seller. I called them to tell them how satisfied we are with this product.
I will definitely buy again from this seller.