Second that. If you get caught with one in VA, you're SOL and the troopers have the technology to find them unless they are only on seconds at a time that doesn't give him time to get a fix on you. Have a friend who has his wired to an old style floor mounted dimmer switch that he can flip on, take a "reading" and flip it off. Not only will you get a ticket for speeding and another for posessing an illegal device, you'll hand over your $$$ detector and you can rest assured he'll go over your car with a fine toothed comb and probably find other things to nail you on like dirt on your lisence plates. The troopers I know have zero tolerance for them.