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• Do not leave the battery in an extremely high temperature environment that may result in an
explosion or the leakage of flammable liquid or gas
• Do not subject battery to extremely low air pressure that may result in an explosion or the
leakage of flammable liquid or gas
IP Rating
Notice to the User: Regulatory content can also be viewed on your device. To view the content:
Settings Device Info Regulatory Info
Model FB421 has a water resistance rating of IPX8 under IEC standard 60529, up to a depth of 50
meters.
Model FB421 has a dust ingress rating of IP6X under IEC standard 60529 which indicates the device is
dust-tight.
Safety Statement
This equipment has been tested to comply with safety certification in accordance with the specifications
of: EN62368-1:2014 + A11:2017, BS EN62368-1:2014 + A11:2017.
Regulatory Markings
Device regulatory markings can be viewed on your device by removing the band. Markings are located in
the band attach area.
