Was very happy to find a TPMS system that didn't lose signal on my caravan and worked offline. I only did one ride but it worked fine. Installation was easy - just install the flow valve until it hisses and the sensor is found. Install the repeater on the battery compartment. Set the minimum and maximum PSI on the display, charge and go! It's a little pricey at over $300 and I had to do a lot of thinking and research before buying it. However, I hope it's worth it.