APPARATUS AND METHOD FOR DETECTING THE CONDITION OF AN ITEM

摘要

The present invention relates to an apparatus and method for detecting the condition of an item and, particularly, but not exclusively, to an apparatus and method for detecting a specific condition of a motor vehicle tyre. The invention provides apparatus (4) comprising a structure for radiating radio frequency energy in response to a reception by said structure of radio frequency energy; said structure having a first configuration which, in use, is changed to a second configuration in response to said item attaining said specific condition; said change in configuration producing a detectable difference in radio frequency energy radiated from said structure. Apparatus according to the present invention thereby allows for the remote interrogation of the condition of an item.