Sena SP54 User Manual page 9

• The battery performance may be reduced over time with usage.
• In recharging the battery, make sure to use an approved charger provided by the manufacturer. Use
of a non-approved charger may cause fire, explosion, leakage, and other hazards may also reduce the
life time or performance of the battery.
• Any 3rd party USB charger can be used with Sena products if the charger is approved by either the
FCC, CE, IC or other locally approved agencies that Sena accepts.
• Store the battery at temperatures of 15°C~25°C (59°F~77°F). Higher or lower temperatures may
reduce the capacity and life of the battery, or may cause temporary non-operation. Do not use the
product in sub-zero temperature, because it may cause serious reduction of the battery performance.
• If you apply heat to the battery or throw it into a fire, it may explode.
• Do not use the product with a damaged battery. It may explode and/ or cause accidents.
• Never use a damaged charger. It may explode and/or cause accidents.
• Battery life may vary depending on conditions, environmental factors, functions of the product in use,
and devices used with it.
Certification and Safety Approvals
FCC Compliance Statement
This device complies with part 15 of the FCC rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause undesired
operation.
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. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment on and off, the user is encouraged to try
to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antennae
• Increase the separation between the equipment and the receiver
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
FCC RF Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.
End users must follow the specific operating instructions for satisfying RF exposure compliance. The