BS EN IEC 60601-2-66:2020

What is IEC 60601-2-66- Hearing aids and hearing aid systems safety performance   about?  

IEC 60601-2-66 applies to the basic safety of hearing aids and hearing systems,  
hereafter also referred to as me equipment or my system. Accessories with functional connections to a hearing aid may form a hearing aid system. Wireless programming interfaces are covered by IEC 60601-2-66. Programming interfaces with a wired connection to the HEARING AID are covered by IEC 60601-2-66.  
NOTE 1 : Detachable parts of HEARING AIDS, even if supplied separately (e.g., ear hooks, domes, wax guards, etc.), are not considered as accessories, but as component parts 
NOTE 2: IEC 60601-2-66 does no...