Only just seen the post people, buying and fitting the device is not illegal, what is if you use it to avoid detection etc etc. The same is true for the device that jams all types of speed detection devices, basically the jammer uses the same frequencies as an electric garage door, there is a thread on the forum that details a case of a driver in a Suberu Impretza, he had fitted the device to his car, he was stopped previously by the Police as he drove past a camera van and it "scrambled" the radar, he received a warning, he used it a second time and ended up in Court (details of sentence in the thread), as we know a Warning, Reprimand, Caution Etc is entered onto a persons record as a "conviction", so becomes part of a persons antecedent history, be advised never ever accept any of these without Legal Advice as it may come back to bite you. Ride safe all.
