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• Keep batteries out of the reach of children.
• Discard batteries very carefully.
• Never allow children to play with batteries.
• Never change batteries in front of children.
• Never put batteries in your mouth for any reason, as they are slippery
and easy to swallow by accident.
• Always check medication before swallowing, as batteries have been
confused as medications.
In the event a battery is swallowed call:
The National Button Battery Ingestion Hotline
(202) 625-3333 for counsel or treatment
Operating Instructions
Turning the Unit On and Off
After inserting the battery, close the battery door completely to turn
the unit on. Turn the unit off by opening the battery door to the first stop
or removing the battery.
Operating the Volume Control
Increase the volume on the Pro Hear™ by turning the volume control
clockwise. Always start with the unit set at the lowest volume.
Note: The Pro Hear™ has a built-in "safety" circuit which limits
the output of the instrument to a maximum of 115 dB SPL.
Program Selection
The Pro Hear™ II has two programs (#1 and #4), the Pro Hear™ II+
and Pro Hear™ IV have all 4 programs:
Program Ideal For
1. General Everyday Use
2. Crowds Restaurants/Sporting Events/Large Meetings. Compression
is set to 85dB.
3. Music/Theater Concerts/Cinema. Compression is set to 85 dB.
4. Nature Outside/Birdwatching/Hunting. Compression is set to 85 dB.
When first turned on, the Hybrid defaults to #1, the General program.
To change between programs, push the program button. You will hear
a series of beeps as you change programs: one beep: program # 1,
two beeps: program # 2, etc.
Your Pro Hear™ is programmed with an intermittent beep or tone to
indicate that the battery life is less than 10%. When you hear this tone
it is a prompt to replace the battery before the unit stops functioning.
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