| Ameriphone -- Communication equipment, amplified telephones, voice carry-over phone and notification systems for the deaf and hard-of-hearing. |
| Gentner -- Manufactures assistive listening devices such as amplified audio for hearing impaired people. |
| Hearcare -- Provides a wide range of hearing aids, accessories and services. |
| Hearing Aid Telephone Interconnect Systems -- Develops products to connect hearing aids with cellular phones, telephones, and other listening devices. |
| Listen Technologies -- Manufactures wireless assistive listening systems for the hard of hearing. |
| PhonicEar Logia -- Manufactures hearing aid products and assistive listening devices. |
| Printacall -- Manufactures communications technology for deaf, hearing impaired and speech impaired people. |
| TypeWell -- Manufactures an educational transcription software that allows communication access during classes for deaf students. |
