Ap
pendix
Working condition
Temperature: –20°~60° C, -4°F~140°F
Air humidity: ≤ 85%
Air pressure: 500~ 1100 KPa
Good health practice requires that a person with a hearing loss have a medical
evaluation by a licensed physician (preferably a physician who specializes in
diseases of the ear) before purchasing a hearing aid. Licensed physicians who
specialize in diseases of the ear are often referred to as otolaryngologists,
otologists or otorhinolaryngologists.The purpose of medical evaluation is to
assure that all medically treatable
conditions that may affect hearing are identified
and treated before the hearing
aid is purchased.
Following the medical evaluation, the physician will give you a written statement
that states that your hearing loss has been medically evaluated and that you may
be considered a candidate for a hearing aid. The physician will refer you to a
Hearing Healthcare Professional for a hearing aid evaluation.
The audiologist or hearing aid dispenser will conduct a hearing aid evaluation to
assess your ability to hear with and without a hearing aid. The hearing aid
evaluation will enable the healthcare provider to select and fit a hearing aid
to your individual needs.
FDA information
19
20
Max Output (OSPL 90dB).....................................121±3
HFA Avg Output (OSPL 90dB)..............................110±4
HFA Avg Gain (input 60/50dB)..............................38±5
EQ Input Noise (dB)...............................................≤30
Total Harmonic Distortion % (500Hz).....................≤3
Total Harmonic Distortion % (800Hz).....................≤3
Total Harmonic Distortion % (1600Hz)...................≤2
Frequency (Hz) F1.................................................≤300
Frequency (Hz) F2.................................................≥5000
Size (hearing aid
housing).....................................3.5x1.4x0.8 (cm)
Weight (hearing aid housing).................................3g
Technical Specifications
