So I mostly I love it. EXCEPT 1 thing it sticks to your windshield. Which allows you to charge it solar. BUT I guess I got unlucky and a rock hit my windshield so now I'm stuck with it sitting on my dash since I had to replace my windshield

Does what is supposed although it throws false audible alarms some times. A quick look tells me every thing is ok. I used it on my fifth wheel and the range seems fine . I thought I ordered the dash mount version as the window mount cannot be removed easily and this winter I will have to pull it down and reattach next year.

I purchased two sets of them. One set worked right out of the box. One of the sensors did not work. I contacted the company and they are suppose to send me a replacement and that has been about a month. The sensors that work are extremely accurate when compared to the actual tire Guage and the temperature Guage is a great feature it allows for you to see the actual temperature wheel.

Update to my initial review
I sent the first one back and the second one seems to work much better so far.
I was rarely getting updates on the first one but the second one so far seems to update regularly and work pretty good. I changed from 2 stars to 3 stars based on that and if it still works a few months from now will raise my rating to 4 stars. I still had to install my own fresh batteries because every budget tpms I have received so far had weak batteries in it.

I bought this TPMS for my older Dodge Caravan. I will say that the instruction for me were not near as bad as many say. They were easy to follow and in minutes I got everything working to the extent that it would work.

I checked the battery voltage before installation to be sure low voltage would not be a problem. Sure enough, all 4 batteries were low measuring right at 3.07v Fresh ECR1632 batteries should measure at around 3.3v.
I installed fresh batteries to make sure they were all fully powered.

I can see the readings on the face of the base unit just fine in all lighting conditions and the device changes the brightness based on Ambient light. Nice.

But unfortunately, when it comes to doing what they are designed to do the fun stops. I found that the device had a very difficult time updating the pressures and temperatures. I could drive 20 or mores miles with no updates at all. Often, the device would display the readings from an earlier trip and not even update them at all on the next trip.

I believe the problem is that the device has no external receiver antenna to receive the signal from the valve stem sending units making the signal so weak that the base unit can't get the signals.
it could also be interference from each unit. Keep in mind that all 4 sending units must either have a different frequency and they are probably so close as to be confusing each other on top of how weak the signals are already.

It could well be that some senders and some base unit receivers are just a bit better tuned or better than others so if you keep sending them back and trying again you might eventually get a working set up.

Bottom line: this setup is novel and budget friendly, but it just isn't reliable enough to trust.
I'm sending it back and trying a different, somewhat more expensive TPMS offering.

We recently added this to our trailer before a 3500 mile trip. About 200 miles later, it showed a low tire on the trailer. The tire did indeed have a staple in it. Paid for itself before I could even get out of state. Worked well for duration of trip.