Well, first things first. I have a 30ft trailer. It works fine with the included signal booster, although it's only rated for 25 feet. It's compact, unobtrusive, and displays exactly the information I wanted: tire pressure and temperature. The display is perfectly positioned and the most user-friendly device I have ever seen. For the first 3 months I couldn't be happier until the left side of the display got very dark. The battery was fully charged, the right side lit normally, the left side was barely visible. Contacted Tire Minder directly and they quickly sent a new receiver and helped me pair the transmitters to the receiver. Everything is working properly again. Excellent customer service from Tire Minder, would buy one again anytime.