Those are cheaper than the commercial grade ones I looked at, but I'm wondering if it wouldn't be best for me to spend the extra money. The commercial ones had rechargeable batteries and there were no wires even between the two lights. How long of a life do you get out of the batteries?
Edit: I looked at the Youtube video and these Blazer lights seem to have a lot of wires for being wireless. Per the video you plug in the transmitter and then it has a wire and a magnet mount to mount the transmitter high on the tow vehicle. The back of my motorhome is all fiberglass, where do you mount it? The commercial grade unit just has a plug and the transmitter is built into the plug. There is no wire to it.