Overmax VERTIS famy, Руководство пользователя

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such as your phone or other radio equipment.
Areas with potentially explosive atmospheres include
fuelling areas, below decks on boats, fuel or chemical
transfer or storage facilities, areas where the air
contains chemicals or particles, such as grain, dust,
or metal powders.
Blasting Caps and Areas
Power off your mobile phone or wireless device
when in a blasting area or in areas posted power
off “two-way radios” or “electronic devices” to avoid
interfering with blasting operations.