Sena SP54 User Manual page 11

Caution
The distance between the antenna of the device and the head surface is at least 40mm and use 40mm
or more.
La distance entre l'antenne de l'appareil et la surface de la tête est d'au moins 40mm et d'utiliser 40mm
ou plus..
<Figure 1>
WEEE (Waste Electrical and Electronic Equipment)
The crossed-out wheel bin symbol on the product, literature, or packaging reminds you that all electrical
and electronic products, batteries, and accumulators must be taken to separate collection at the end of
their working life. This requirement applies to the European Union and other locations where separate
collection systems are available. To prevent possible harm to the environment or human health from
uncontrolled waste disposal, please do not dispose of these products as unsorted municipal waste, but
hand it in at an official collection point for recycling.
DOT Certification
This product conforms to the DOT FMVSS 218 (US) helmet safety standards as defined by the United
States Department of Transportation Federal Motor Vehicle Safety Standard. This certification applies
to the United States of America. The approval label can be affixed permanently to the outside of the
helmet (United States, Argentina, Australia and others). Do not remove or attempt to remove the
approval label from the helmet. Do not affix approval labels of unknown origin to the helmet. These are