ZT2111 HEARING AMPLIFIER USER MANUAL
Important Safety Instruction Safety and health information Intended use The Lark Sound hearing amplifier are a pair of user‐fitted wireless air conduction hearing amplifier intended for use by individuals 18 years and older with perceived mild to moderate hearing impairment. Indications for use The Lark Sound hearing amplifier are intended to amplify sound for individuals 18 years of age or older with perceived mild to moderate hearing impairment.
Important Safety Instruction Safety and health information Hearing health care information This product may help you hear better if you: • Strain to follow conversations when others don’t, especially in noisy places. • Have trouble understanding the TV.
Important Safety Instruction Safety and health information You should see a hearing health care professional if you: • Have a visible deformity of the ear. • Have a current ear infection or a history of active discharge from one or both ears within the past 90 days. • Have sudden or rapid progression of hearing loss within the past 90 days in one or both ears. • Have acute or chronic dizziness, poor dexterity, poor vision, or significant dementia.
Important Safety Instruction Safety and health information This product will not restore normal hearing and will not prevent or improve a hearing impairment resulting from organic conditions. This product is designed to help you make greater use of your remaining hearing ability. You should keep in mind that it can take time to become accustomed to hearing new sounds. For best results, practice using the hearing amplifier as much as possible.
Important Safety Instruction Safety and health information Keep and store device and components out of reach of children. Contains small parts which may be a choking hazard. • To prevent hearing damage: – Use appropriate hearing protection in loud environments. The hearing amplifier are NOT hearing protection devices. – Remove the hearing amplifier if you encounter any overly loud sounds. • Do NOT use the hearing amplifier in explosive or oxygen‐enriched atmospheres.
Important Safety Instruction Safety and health information • Be aware that some sounds may sound different when you’re using the hearing amplifier. Keep this in mind when you need to be aware of your surroundings. You should adjust to this over time. • Consult a hearing care professional if you experience any unusual side effects like skin irritation, excessive accumulation of ear wax, dizziness, change in your hearing, or if you think there may be a foreign object in your ear canal.
Important Safety Instruction What’s in the box Charging case (1) Hearing amplifier (1 pair) Hearing aid brush (1) Type‐C charging cable (1) Eartips (6 pairs) User Manual (1) Specification • Input Voltage: 5V 1A • Battery life: 6 hours for single charge • Charging case capacity : total 30hr usage with case • Hearing Aid Amplification Gain: > 50 dB • Volume amplify: 19 levels • High frequency(Treble) compensation 8 levels, Low frequency(Bass) compensation 8 levels • Water resistant: resis
Important Safety Instruction Set up the hearing amplifier Charging • While you charging the case, display showing "Charging", after it fully charged, showing "100%". • Earphones will be automatically charging after you put them in the case, earphone light stop flashing after fully charged. How to Self‐Tuning this Hearing Amplifier 1. Open the cover of charging case, the screen shows the remaining charge of the battery, press and hold the power on for 3 seconds until the "LARKSOUND" logo is released.
Important Safety Instruction Set up the hearing amplifier 2. After the logo, the screen shows "Please select". KEEP THE EARPHONE IN THE CHARGING CASE. Choose to adjust the needed earphone, please press L for left earphone, press R for right earphone; 3. After selected earphone, the charging case will connect earphone automatically, KEEP THE EARPHONE IN THE CHARGING CASE before display shows ”Connected”, then you can wear the earphone for Self‐ Tuning.
Important Safety Instruction Set up the hearing amplifier 4. How to Wear Earphone Place the logo vertically downwards, plug the earphone into the ear canal, and gently rotate the headset back until it can be completely placed inside the ear and snug. When taking out, the fingers clamp the earphone and rotate it forward. 5. Volume adjustment: Rotate the left or right knob for adjusting volume.
Important Safety Instruction Set up the hearing amplifier 6. Treble or Bass adjustment: Short press power button to choose Treble or Bass, then short press L or R, for adding 1 level of treble, with each setting, the earphone will have a sound of the corresponding level, and you can judge whether the level is appropriate according to the sound. The initial level is 4, highest level is 8, after you added to 8, it will return to level 1.
Important Safety Instruction Set up the hearing amplifier 7. After you finished Self‐Tuning one of the earphone, and want to adjust another one, please long press L for left earphone (or R for right earphone) to disconnect current one, system will return back to step 2(select earphone), then you can select and start Self‐Tuning follow the above steps. *After you finished all earphones’ Self‐Tuning, the system will remenber the adjustment, no need to re‐adjust them when you restart.
Important Safety Instruction Care and maintenance Store the hearing amplifier To protect the hearing amplifier, store them in the case partially open when you’re not using them. Keep and store device and components out of reach of children. Contains small parts which may be a choking hazard. Maintain the hearing aids To prevent damage and preserve sound quality, it’s important to regularly maintain the hearing aids and replace components Moisture Moisture can damage the hearing aids or cause them to fail.
Important Safety Instruction Trouble Shooting Problems Solutions Charging case does not power on open the charging case cover, if there is no power shows on display, you need to charge first, when the power is less than 20%, it need to be charged first.
Important Safety Instruction FCC Compliance NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
