This detector is used when testing with ampoules. It protects the substance from being changed by the patient's natural frequencies.

When testing substances from the test sets, the tester picks up the protection detector and places the dished head of the detector on the ampoule containing the substance. The protection detector allows the oscillation pattern of the test substance to enter the measuring circle while preventing oscillation coming from the bio-resonance device or the patient from influencing the substance itself. As a result, the substance remains completely unchanged, which is essential for the correct testing of future patients.

The protection detector is equipped with a connection cable of 1.5 m length (39.4 inches).