User's Manual

23
PREPARATION
Listening Safely
To protect your hearing, follow these guidelines when you use headphones.
• Set the volume to zero before putting on headphones. With the headphones on,
adjust the volume to a comfortable level.
• Avoid increasing the volume once you set it. Over time, your sensitivity to a volume
level decreases, so volume levels that do not cause discomfort might damage your
hearing.
• Avoid or limit listening at high volume levels. Prolonged exposure to high volume
levels can cause permanent hearing loss.
Traffic Safety
Wearing headphones while operating a motor vehicle or riding a bicycle can create a
traffic hazard and is illegal in most areas.
Even though some headphones let you hear some outside sounds when listening at
normal volume levels, they still can present a traffic hazard. Exercise extreme caution!
Power Sources
You can power your scanner from any of these sources:
Internal non-rechargeable batteries or rechargeable batteries (not supplied – see “Using
Batteries” on Page 24).
Standard AC power (with an optional AC adapter – see “Using AC Power” on Page 27).
Vehicle power (with an optional DC adapter – see “Using Vehicle Battery Power” on
Page 27).
Notes