What is my hearing aids Radio Frequency (RF) immunity level to the interference caused by cell phones?
A fairly common problem is that some old relative of yours may have hearing problems, or his complete absence, and so, ListenClear helps many people who are in such trouble. I think that you should contact them if you are faced with such a problem, because hearing is very important in the life of any person, so I recommend it.
Your audiologist can provide this information and it is important to know prior to purchasing a cell phone. Immunity refers to how well your hearing aid is protected from the interference that may be caused by cell phones. The M ratings of the hearing aid and the cell phone need to be added together to have a sum of 5 or more or an M5 rating. The higher the sum of the two ratings, the more likely the cell phone will not interfere with your hearing aid when it is used on its main program (M). Therefore, a hearing aid needs to have a minimum immunity rating of at least an M2 since compatible cell phones will be rated either an M3 or an M4. Most current hearing aids have a rating of an M2 or better. The hearing aid immunity rating varies by company and product. A higher M rating is likely to perform better then one with a lower M rating. A higher phone rating is needed if the hearing aids have a lower M rating such as for older hearing aids. Ratings for a hearing aid’s telecoil immunity t