Nice!
I was putting a system in my RV for dry camping and this works nice to turn inverter on and off from inside my RV. It's basically a phone cord and easy to route and install. Looks nice too and is a very slim design with nothing sticking out to run into. Very Nice!!

Not neccesary, but nice
We bought this thinking we had to have it for our higher power inverter. We did not need it. However it let us turn the inverter off and on from either side of the vehicle, which when you are using the inverter a lot for various things, it is nice.
Just want to mention. The indicator light can be hard to see during daylight as it is glowing through from behind the face panel. It is tempting to cut a hole around it.

Remote works as you'd expect.
I replaced my old 1750 watt inverter with this new Cobra 2500 watt unit. I was disappointed to find my old remote switch (from the other inverter) did not work, even though the plug and wire were the same. So I ordered this one made for the Cobra and VIOLA. Works like a charm. In fact, it's even better than the old one because I don't have to first turn the master switch on (on the inverter itself) in order for the remote to work. So, I'm totally satisfied with this switch.