Multiplex Technology 4CH H.264 - Manual (Page 3)

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All the safety and operating instructions must be read before the unit is operated.
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Make sure to switch the power off before you install the DVR.
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There is the danger of an electric shock if the DVR is opened by an unqualified service
engineer or installer.
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Avoid using the DVR outside of the reference temperature and humidity indicated in the
specification.
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Avoid exposing the DVR to violent movement or vibration.
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Do not use or store the DVR in direct sunlight or near to any source of heat.
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Do not place any object into the holes used for air circulation.
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Always use the DVR in a well ventilated location to prevent overheating.
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Risk of explosion if battery is replaced by an incorrect type.
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Dispose of used batteries according to the instructions.