ah... thanks for the tip...

 

Look at Redline or Beltronics STI driver. These two are undetectable to RDD Spectre.

 

There are several ways to catch detectors without using high tech. e.g. a cop following far behind quickly flashes his radar and watches for brake lights. You are now a target. If he flashes again and you brake again, you're busted. There are plenty of other tricks to detect detectors so in Ontario, I wouldn't try it. They'll confiscate your unit and slap you with a nice fine.

And btw, most cops use LIDAR now so your radar detector is pretty much a brick...