I have this product that I bought two and a half years ago. I loved it so much I moved it from my truck to my Subaru when I sold it. If your vehicle does not have TPMS I highly recommend this kit. I love knowing at a glance if a tire is low. For video of it in action, check out ChrisFix.

It looks like the version that I have is no longer sold, but this kit looks to be from the same OEM.