HOW: Easy to set up. They are preprogrammed for the double and tandem axle trailer I have. Simply place the numbered sensors on the tires according to the instructions and you're done. DON'T LIKE: Display and mounting hardware feel cheap. The display is very bright, and it just feels pathetic. I went to adjust the angle of the display and the small bracket that fits into the back from the suction cup mount came loose immediately. I contacted the manufacturer and they sent a replacement but it seems very unreliable. UPDATE: Well I think the photos speak for themselves. Apparently you used the wrong type of connection for the suction cup. And it's clear that the replaceable clip has warped from the heat. I don't know how to clean up this mess! CONCLUSION: I would not buy it again.