looking for; preassure sensative air valves the size of tire fill valves,?

I need a small valve that will sense low air preassure and fill as required. also looking for similar air valve, but with ability to remotely, (radio) control air preassure.

Call your nearest Hummer or Jeep dealer or an auto parts store that sells accessories for the same. Just don't tell them you want to put it on a Corrolla