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in fuel depots, storage, and distribution areas; chemical
plants; or where blasting operations are in progress. Areas
with a potentially explosive atmosphere are often, but not
always, clearly marked. They include below deck on boats,
chemical transfer or storage facilities and areas where the
air contains chemicals or particles such as grain, dust, or
metal powders. You should check with the manufacturers of
vehicles using liquefied petroleum gas (such as propane or
butane) to determine if this device can be safely used in
their vicinity.
■
Emergency calls
Important:
This device operates using radio
signals, wireless networks, landline networks, and
user-programmed functions. If your device
supports voice calls over the internet (internet
calls), activate both the internet calls and the
cellular phone. The device will attempt to make
emergency calls over both the cellular networks
and through your internet call provider if both are
activated. Connections in all conditions cannot be
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