Sennheiser SK 5012 Notice D'emploi page 33

TM
HiDyn plus
TM
This transmitter is equipped with HiDyn plus , the Sennheiser
noise reduction system that reduces possible RF interference.
Together with a receiver which is also equipped with HiDyn plus TM
(e.g. EM 1046), an RF link of excellent operational reliability and
highest transmission quality can be set up.
SK 5012 - 33