TS 6662

TS 6662 is a standard focused on the symbols and other markings used on hearing aids and related equipment, with the aim of making technical meaning visible in a consistent way. These markings help users, service personnel, and manufacturers quickly understand what the controls and functions on a device represent.

According to the scope, the standard covers symbols used to identify control settings and to provide information about technical functions and characteristics. Read together with the title, this points to markings for controls such as gain, output, tone, switches, selectors, and preset controls, as well as indications linked to receiver characteristics and polarity. In practice, this creates a common visual language so that the same function is represented consistently across different devices.

Why marking consistency matters in hearing aids

Hearing aids are compact, highly interactive devices, so their symbols do more than label parts: they support correct adjustment and reduce the chance of misinterpretation. From a general technical perspective, consistent markings make it easier to compare models, understand related accessories, and interpret device functions without relying entirely on lengthy text instructions.

• Helps distinguish control settings at a glance.
• Communicates technical functions without relying only on text.
• Supports consistent understanding across different manufacturers.
• Reduces confusion during setup, use, and servicing.

This standard is about the marking language rather than the full design or performance specification of hearing aids. As a result, its practical value lies in making device functions easier to identify and compare. TS 6662 provides a structured visual and terminology framework for that purpose.