JH-D12A OTC BTE Hearing Aid User Manual

Document Version: V1-1
Model: JH-D12A (Over-the-Counter Hearing Aid, Behind-The-Ear)
Manufacturer: Huizhou Jinghao Medical Technology Co., Ltd. (JINGHAO)

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Product Overview #

This user manual provides comprehensive instructions for the JH-D12A Over-the-Counter (OTC) Behind-The-Ear (BTE) Hearing Aid. Please read this manual thoroughly and completely before using the product. This device is intended for users aged 18 or older with mild to moderate hearing loss and should be used under the guidance of professionals.

Table of Contents #

1. Important Safety Warnings (FDA OTC Compliance)
2. Contraindications & Cautions
3. Getting to Know Your Device & Accessories
4. Using the Hearing Aids (Fitting, On/Off, Volume, Programs)
5. Using the Charging Base
6. Care & Maintenance
7. Troubleshooting Guide
8. Technical Specifications & Regulatory Information

1. Important Safety Warnings (FDA OTC Compliance) #

• Age Restriction: If you are younger than 18, DO NOT use this device. You should go to a doctor, preferably an ENT (Ear-Nose-Throat doctor), because your condition needs specialized care. OTC hearing aids are only for users who are age 18 or older.
• When to See a Doctor: If you have any of the following problems, please see a doctor (preferably an ENT):
  • Your ear has a birth defect, unusual shape, or was injured/deformed in an accident.
  • You saw blood, pus, or fluid coming out of your ear in the past 6 months.
  • Your ear feels painful or uncomfortable, or you have a lot of earwax.
  • You get really dizzy, have vertigo, or hear ringing/buzzing in only one ear.
  • Your hearing changed suddenly in the past 6 months, or it gets worse then gets better again.
• Pain Warning: This hearing aid should not cause pain when inserting it. Remove the device if it causes pain or discomfort. If pain persists, contact your hearing healthcare professional or report it to the FDA.
• FDA Reporting: To report a problem involving your hearing aid, submit information to the FDA as soon as possible via https://www.fda.gov/Safety/MedWatch or call 1-800-FDA-1088.

2. Contraindications #

Do NOT use this device if you have:

• Congenital atresia of the external ear or deformity of any part of the ear canal.
• Unstable deafness, or fluctuating hearing loss.
• Persistent headaches, dizziness, earaches, or tinnitus.
• Sudden onset of hearing loss within the past 3 months, rapid progressive deafness, or unilateral hearing loss.
• Effusion (secretions/discharge) in the ear or frequent purulence (pus).
• Acute otitis externa, tympanitis, or acute/chronic suppurative otitis media.
• Allergic reactions to the materials of this product.

3. Getting to Know Your Device #

• Hearing Aid: Features a microphone, volume button (increase/decrease/program switch), ON/OFF button, ear tube, stabilizer bar, eartip, and charging contacts.
• Charging Base: Features L/R charging slots, L/R charging indicators (Orange for charging, Green for fully charged), and a USB charging port.
• Markings: Blue marking indicates the Left hearing aid; Red marking indicates the Right hearing aid.

4. Using the Hearing Aids #

• Fitting Eartips: Choose the suitable size (L/M/S). Push the eartip rim membrane outward and push firmly onto the ear tube.
• Wearing: Place the hearing aid over the top of your ear. Push the eartip gently into your ear canal and place the stabilizer bar at the bottom of your auricle.
• ON/OFF: Turn the switch up to “ON” to turn on, and down to “OFF” to turn off.
• Volume Control: 6 volume levels. Pull up the button to increase volume, pull down to decrease. Prompt tones indicate maximum/minimum volume.
• Program Switch: 4 preset programs. Pull up or down the “hearing program switch” button for about 3 seconds to cycle through. (Beep tones indicate different programs).
• Insertion Depth: Maximum insertion is 11.5mm, leaving a safe distance of at least 11.5mm from the eardrum (complies with OTC regulations).

5. Using the Charging Base #

• Charging: Turn off the hearing aids and place them in the correct L/R slots. Connect the USB cable to the charging base and power supply. Orange lights indicate charging; Green lights indicate fully charged.
• Storage: Always store your rechargeable devices in the Charging Base when not in use. Do not store them for extended periods without recharging (max. six months).

6. Maintenance & Cleaning #

• Do not drop the hearing aids or expose them to high temperatures, humidity, or liquids.
• Do not use sharp tools to dislodge earwax.
• Clean eartips daily with the provided cleaning tool. Wipe the hearing aid surface with a soft cloth. Do not use alcohol or solvents.
• Replace eartips every 3-6 months or when they become stiff, brittle, or discolored.

7. Troubleshooting Guide #

• Feedback/Whistling: Check if the eartip is broken or clogged. Ensure correct insertion. Try a larger eartip or remove earwax.
• No Sound/Voice is Weak: Check if the device is on, battery is charged, volume is high enough, or if the microphone is clogged.
• Charging Base Issue: Ensure the adapter is powered, the USB cable is connected correctly, and the charging contacts are clean.

8. Technical Specifications (Program 1) #

• Test Standard: ANSI S3.22-2014
• Max Output (OSPL90): 109dB
• HFA FOG@50: 33dB
• Total Harmonic Distortion (THD): 1.4%
• Equivalent Input Noise (EIN): 8dB
• Frequency Response Bandwidth: f1=200Hz, f2=6100Hz
• Battery Life: ≥10 hours
• Operating Environment: 0°C~40°C, 30%-75%RH

Regulatory Information & Manufacturer #

Manufacturer: Huizhou Jinghao Medical Technology Co., Ltd.
Address: No. 207, South SiHuan Rd, ZhongKai Hi-tech District, Huizhou, Guangdong, China. Zip Code: 516000
Website: www.jhhearingaids.com | Email: emily@jhhearingaids.com
Warranty: This limited warranty covers defects in material and workmanship for one (1) year from the date of purchase.