Important Safeguards And Warnings - Dahua NVR21-4 KS2 Series User Manual

The following description is the correct application method of the device. Read the manual
carefully before use to prevent danger and property loss. Strictly conform to the manual
during application and keep it properly after reading.
Operating Requirement
 Install the PoE front-end device indoors.
The device does not support wall mount.
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Do not place and install the device in an area exposed to direct sunlight or near heat

generating device.
 Do not install the device in a humid, dusty or fuliginous area.
Keep its horizontal installation, or install it at stable places, and prevent it from falling.

Do not drip or splash liquids onto the device; do not put on the device anything filled with
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liquids, in order to prevent liquids from flowing into the device.
Install the device at well-ventilated places; do not block its ventilation opening.
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Use the device only within rated input and output range.
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 Do not dismantle the device arbitrarily.
 Transport, use and store the device within allowed humidity and temperature range.
Power Requirement
Make sure to use the designated battery type. Otherwise there may be explosion risk.
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 Make sure to use batteries according to requirements. Otherwise, it may result in fire,
explosion or burning risks of batteries!
To replace batteries, only the same type of batteries can be used.

Make sure to dispose the exhausted batteries according to the instructions.
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 The product shall use electric wires (power wires) recommended by this area, which shall
be used within its rated specification.
Make sure to use standard power adapter matched with this device. Otherwise, the user

shall undertake resulting personnel injuries or device damages.

Important Safeguards and Warnings

Important Safeguards and Warnings IV