Genevo Radar detectors are immune to RDDs
Selected models of Genevo radar detectors are undetectable by RDDs (radar detector detectors) used by police in some European countries.
What is RDD?
RDD, or Radar detector detector is a device which detecting radar detectors. While radar detector is scanning radar bands, oscillators inside of the radar detector are emitting radiation which RDD can detect.
More info at: Wikipedia - Radar detector detector
Where RDD is used?
In Europe, RDD are used in:
Portugal, Spain, Belgium, Netherlands, Swiss, Finland, Latvia, Estonia