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Phones and accessories that are Hearing Aid Compatible (HAC) will work with hearing aids that support the telephone switch feature. This is commonly known as the "T-switch" or "T-coil" that is built into the hearing aids. HAC products will only work with hearing aids that have a telephone switch.
HAC phone accessories are available to allow wireless phones to work better with hearing aids. Not all the wireless phones are hearing-aid compatible by themselves and not all the wireless phones that are hearing-aid compatible work well with all hearing aids. This is sometimes due to the radio signals generated by the phone or by the hearing-aid design. HAC phone accessories help correct these issues.
| MANUFACTURER | PHONE MODEL | TTY ADDITIONAL REQUIREMENTS | HAC ADDITIONAL REQUIREMENTS | HAC RATING | FCC ID |
|---|---|---|---|---|---|
| Motorola | RAZR V3i | N/A | OEM HATIS UNIVERSAL 2.5mm T-COIL ADAPTER | M3/T3/UT3 | IHDT56GW1 |
| Motorola | V8 | N/A | OEM HATIS UNIVERSAL 2.5mm T-COIL ADAPTER | M3/T3/UT3 | IHDT56HZ1 |
| Motorola | KRAZR-K1 | N/A | OEM HATIS UNIVERSAL 2.5mm T-COIL ADAPTER | M3 | IHDT56GT1 |
| Nokia | 6061 | HDA-9: Phone Adapter | LPS-3 Accessibility Loopset | M3 | QTLRH-74 |
| Nokia | 6085 | HDA-10: Phone Adapter | LPS-4 Accessibility Loopset | M3/T3/UT3 | LJPRM-198H |
| Nokia | 6126 | HDA-10: Phone Adapter | LPS-4 Accessibility Loopset | M3 | PPIRM-126 |
| Nokia | 6086 | HDA-10: Phone Adapter | LPS-4 Accessibility Loopset | M3 | LJPRM-188 |
| Nokia | 261 | HDA-9: Phone Adapter | LPS-3 Accessibility Loopset | M3 | QTLRH87 |
| Sony Ericsson | S500 | N/A | OEM HATIS UNIVERSAL 2.5mm T-COIL ADAPTER | M3/T3/UT3 | PY7A1052041 |
| Sony Ericsson | K550i | N/A | OEM HATIS UNIVERSAL 2.5mm T-COIL ADAPTER | M3/T3/UT3 | PY7A1052023 |
| Sony Ericsson | W580 | N/A | OEM HATIS UNIVERSAL 2.5mm T-COIL ADAPTER | M3/T3/UT3 | PY7A1052042 |