Medical Definition of adhesive. 1: an adhesive substance; especially : a substance (as glue, starch, paste, or mucilage) that bonds two materials together by adhering to the surface of each.
The sensors physically measure the tire pressure in each tire and report it to the vehicle's instrument cluster or a corresponding monitor. Some units also measure and alert temperatures of the tire as well. These systems can identify under-inflation in any combination, be it one tire or all, simultaneously.
Direct TPMS uses pressure monitoring sensors within each tire that monitor specific pressure levels â not just wheel revolution data from the anti-lock brake system. Sensors in a direct TPMS may even provide tire temperature readings.