Hi, Welcome to BEST HEARING AIDS,KANFO.JIAKANGDUO.KANFO.COM !
KF-1909 2 Channel Digital RIC Behind The Ear Hearing aids
Use our hearing aids.hearing loss of 65% of the people will still hear vioces outside.
There are some important indexes for a Hearing Aid.
1. Power increasing range
2. Stability of output signal and timbre disposal
3. Max distortion index and disposal function
4. The earphone quality All the above factory effect the Hearing Aid quality
5. Our hearing aid have design manostat electrocircuit on PCB,The manostat electrocircuit can leach outside noise and protect eardrum.
1.Max. saturated sound pressure: ≤120+3dB
2.High frequency average: 110±5dB
3.Max.voice gain: 35±5dB
4.Equivalent input noise level: ≤32dB
5.Total harmonic wave distortion: ≤10%
6.Frequency response range:300-5000 HZ
7.Battery voltage: DC 3.7V
9.The speaker impedance: 120 ohm
10.Output power: 5mW
1. We have register ISO 13485:2016 for our all product.
2. Hearing aids have got Europrean professional Medical CE certificate: EU-MADICAL DEVICES DERECTIVE-93/42/EEC.
3. Warranty: 18 months.
4. Kanfo provide excellent service and competitive price.
Hearing aids are worn, Why is there noise?
Because the hearing aids belong to the electronic product,It has a current sound. Generally, It is considered to be a noise. It is not that there is no so-called noise at all.Even the best machine will have a current sound. As long as the operation is correct. The current sound is you can adapt slowly according to time.
1) Check if the size of the lower earplug (silica gel) is suitalbe and it is tight,(Because the hearing aids is not in contact with the air, If the earplug is not plugged, The air leakage will produce a larger current sound).
2) Try to turn down the volume as soon as you start using it. Generally, Don’t turn it to the maximum sound.(It recommended to adjust to 1 or 2 when you first start wearing it, If you can’t hearing it, Then slowly increase it).
3) Generally, When you start wearing it, It is recommended wear it for 8 hours every day. After tow to three weeks of wearing, You will adapt slowly, (Sometime, Because you are used to the previous hearing. When you first use it, You will hear some unfamiliar sound. It’s noise，It’s not clear, But it’s because the hearing aids magnify the sound that you can’t usually hear. It’s usually used for a while).
Why does the haring aids scream when it is turned on?
The main reason why the hearing aids generally produce whistling is that there is sound leakage between the eardrum and the external auditory cannal, The sound amplified by the hearing aids leaks through the eardrum of the eardrum, After being picked up by the Microphone and amplified. The whistle will be generated. It is recommended to select appropriate earplug and then adjust the sound to the small angle to tighten the ears.
How is the hearing aids maintained and cleaned?
Develop the habit of the cleaning the hearing aid, Use the proivded brush to remove the earwax or other tiny particle accumulated around the ear canal the hearing aid, The volume adjustment knob and the charging interface, Then gently wipe the hearing aids with a soft cloth. Do not use solvents, Clean if the liquid or oil is clean and the hearing aid is not use, Turn off the switch, This will extend continuous use time. If it is not turned off, It will make a squeaking noise, Which may cause the attention of children or pets.Resulting in unnecessary damage.