Dahua Technology VTH2421F Series, User Manual

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III
Important Safeguard and Warnings
This section introduces content covering the proper handling of the device, hazard prevention, and
prevention of property damage. Read carefully before using the device, and comply with the
guidelines when using it.
Operation Requirements
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Check whether the power supply is correct before use.
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Do not unplug the power cord on the side of the device while the adapter is powered on.
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Operate the device within the rated range of power input and output.
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Transport, use and store the device under allowed humidity and temperature conditions.
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If the device is powered off for longer than a month, it should be placed in its original package
and sealed. Make sure to keep it away from moisture, and store it under allowed humidity and
temperature conditions.
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Do not drop or splash liquid onto the device, and make sure that there is no object filled with
liquid on the device to prevent liquid from flowing into it.
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Do not disassemble the device without professional instruction.
Installation Requirements
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Do not connect the power adapter to the device while the adapter is powered on.
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Strictly comply with the local electric safety code and standards. Make sure the ambient voltage
is stable and meets the power supply requirements of the device.
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Do not connect the device to two or more kinds of power supplies, to avoid damage to the
device.
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Improper use of the battery might result in a fire or explosion.
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Personnel working at heights must take all necessary measures to ensure personal safety
including wearing a helmet and safety belts.
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Do not place the device in a place exposed to sunlight or near heat sources.
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Keep the device away from dampness, dust, and soot.
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Install the device on a stable surface to prevent it from falling.
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Install the device in a well-ventilated place, and do not block its ventilation.
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Use an adapter or cabinet power supply provided by the manufacturer.
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Use the power cords that are recommended for the region and conform to the rated power
specifications.
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The power supply must conform to the requirements of ES1 in IEC 62368-1 standard and be no
higher than PS2. Please note that the power supply requirements are subject to the device label.
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The device is a class I electrical appliance. Make sure that the power supply of the device is
connected to a power socket with protective earthing.