I love this thing. It sits on the dash, has a bright display showing all wheels at once, was set up right out of the box and was installed and reading pressures in about three minutes.
It has temp and high/low pressure alarms.
They also make a six wheel version that's under 80 bucks, you'll have to look it up yourself.
I already had an eez TPMS on the 24.1 by the time I discovered this unit, so the $40 solar unit is on my truck.
The second unit I bought is going on the wifes Ford truck. Stupid Ford only tells you a low tire, not who or how. I'll put these right on the stem of the factory internal tpms units.
Just a heads up for a really great product.