Sony CRE-C10 Safety And Maintenance Instructions page 22

,
Your devices comply with international andards.
However, it cannot be guaranteed that all products on
the market work interference-free, for example some
induction cookers, electromagnetic security sy ems
(e.g. anti-theft sy ems and metal detectors) cellular
telephones, RFID, room surveillance sy ems may
cause audible interference. If you encounter unwanted
noise in the vicinity of such device, you should
increase the di ance between the hearing aid and
that device.