Okay, I've been looking for a tire pressure gauge for my trailer for years. I never seemed to choose the right thing and put off installing it. That was a big mistake because I had a badly punctured steel-belted tire on the fifth wheel. The tire ripped out massive cables and prop guides and wrapped hundreds of feet of wire around my axle and rim, pulling the wires out of my block walls. The bottom line was that my insurance for cable damage was my fifth 32-footer of 2016. I have since bought a new 2018 fifth wheel and bought this pressure sensor before my first ride. I did my homework before making this purchase and this system is the one I went with. Very easy to install and monitor tire pressure and temperature. I use it on a 37ft fifth wheel and no repeater is required. I even pulled my truck another 10 feet in front of my trailer and still drove great. Now take it as you will but the next statement I make is about myself. I was really stupid not to install this on my first trailer as you can't tell what's going on with the trailer tires until it's too late. The tech support for this product is great and was right there to help with the setup. The photos were taken after I cut hundreds of feet of wire from the axle and rim to get a 2 hour replacement next to fwy at 100 deg plus that was very bad.