Undetectable Radar Detectors

It is surprising to many that radar detectors don't just detect signals, they also emit their own signal. In areas where radar detectors are illegal, police use devices called "radar detector detectors", or RDD's, to identify vehicles with radar detectors. Years ago, the most common RDD was the VG-2. Radar detector manufacturers quickly adjusted for the VG-2, and now every detector on the market claims immunity to it. Now the RDD of choice is the Spectre. The Spectre is very good at its job, and there are very few detectors that can beat it.

Beltronics and Escort have a couple of models (listed below) that beat the Spectre, but the best news is the way in which they have implemented the immunity. Instead of creating a model that specifically beats the Spectre, their talented engineers solved the problem once and for all by building a radar detector that doesn't emit a signal! These models aren't only immune to the Spectre and VG2, they are immune to any future RDD as well!