What is the definition of the Hearing Aid Compatibilty?
For example our models switel M270 and M800 3G are highest level of HAC M4/T4. HAC-compliant mobile phones, device packages are marked with “M” or “T” ratings. The M-rating refers to the microphone mode. The T-rating refers to the telecoil mode. Only phones that meet HAC compliance will be labeled as such. If you see a “M3”, “M4”, “T3” or “T4” on the box then the phone has been designated as HAC compliant.
Hearing aid compatible phones
“T” refers to the phone’s coupling ability and is intended for use with hearing aids in the telecoil mode. The higher the “T” number the more likely you will be able to use the phone with your hearing aid on the telecoil setting. A telecoil is a small device that is built into some hearing aids for use with the telephone as well as assistive listening devices. To use the telecoil, generally either the hearing aid is switched to the “T” position or a button on the hearing aid is pushed to select the telecoil program. The telecoil picks up magnetic fields generated by telephones and converts these fields into sound. Telecoils are particularly useful for telephone communication because they permit the volume control of a hearing aid to be turned up without creating feedback or “whistling,” and background noise can be reduced especially when using cell phones in noisy places. That is why hearing aid phones are important. They give you the ability to control and process sound.
Receiver and Ringer amplification
Switel Amplified mobile and landline telephones feature amplification of the receiving call and also the ringer. The amplification for receiver will be over +30dB, the user can increase volume by adjusting an amplification button on the phone. Ringer volume is over +90dB. This feature is very important for senior and hearing impaired consumers.