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When the product is accessible from the Internet
To prevent unauthorized access, note the following.
• Leave user authentication turned on.
• Periodically change passwords that are used to access
the product.
Refer to the Operating Instructions (PDF) on our support
website for information about how to change passwords.
Power source
The input power source for this product is 120 V AC 60 Hz
(WJ-NX300K), 220 V - 240 V AC 50 Hz/ 60 Hz (WJ-NX300K/G).
Do not connect to the outlet that provides the power to
equipment that requires a measurable amount of power
(such as a copy machine, air conditioner, etc.). Avoid placing
this product in locations where is subject to water.
* The provided power cord(s) is (are) dedicated to the use
with this product. Do not use with any other device. Also,
do not use any other power cord with this product.
Ambient operating temperature
Use this product at temperatures b5 °C to +45 °C
{41 °F to 113 °F}. Failure to do so may damage the internal
parts or cause malfunction.
* Performance and lifetime of hard disk drives are easily
affected by heat (used at high temperature). It is recom-
mended to use this product at a temperature of approx.
+25 °C {77 °F}.
To cut the power supply
This product has no power switch. To cut the power supply,
unplug the power plug of the product from the AC outlet.
Install the AC outlet near the recorder to make it easy to plug
in and unplug the power cord. If the power cord cannot be
unplugged easily due to installation condition, connect the
power cord to an AC outlet via a distribution board circuit
breaker with a cut-off capacity.
Built-in backup battery
• Do not expose the built-in battery to excessive heat such
as sunlight, fire, etc.
Hard disk drive (HDD)
• Hard disk drives are precision devices. Handle them with
care. It is possible to damage them if they are moved
while their motors are still running.
• Please be forewarned that any loss of information on the
HDD is not guaranteed under any circumstances.
• Do not move or install this product just after turning the
power on or off (for around 30 seconds.) The hard disk
drives are running.
• The HDD is consumable and the lifetime differs depending
on the operational environment. Write errors may occur
frequently after around 20000 hours of each HDD
operation and head and motor deterioration may occur
after around 30000 hours of operation. They will reach
the end of their lifetime after 30000 hours of operation if
they have been used at the recommended ambient
temperature (approx. +25 °C {77 °F}).
• To prevent data loss from disk crashes, it is recom-
mended to keep the ambient operating temperature at
approx. +25 °C {77 °F} and to replace them after around
18000 hours of operation.
You can check the operating time of each HDD in
"Operation" of the "HDD information" tab under
"Maintenance" under "Advanced" from the setup menu.
• When hard disk drive trouble occurs, replace it immedi-
ately. Contact your dealer about servicing.
About external storage devices (External HDD and
USB memory)
• An external hard disk drive or a USB memory that is
compatible with USB3.0 can be connected to the copy
port to use as the external storage device.
• Use external storage devices formatted in exFAT, FAT
(FAT16) or FAT32.
• USB media recognizable by the recorder can be format-
ted by the recorder. Refer to Operating Instructions
(PDF) for the format procedure.
• External storage devices requiring password authentica-
tion or a special driver or using an encryption function
cannot be used.
Prevent condensation from forming
If this happens, it can cause malfunction.
Leave it switched off for around 2 hours in the following
cases.
• When this product is placed in an extremely humid
place.
• When this product is placed in a room where a heater
has just been turned on.
• When this product is moved from an air-conditioned
room to a humid and high-temperature room.
About the monitor
When displaying the same image on the PC monitor for a
long time, it may cause image burn-in on the PC monitor.
Cleaning
• Turn the power off, and then use a soft cloth to clean
this product.
• Do not use strong or abrasive detergents when cleaning
the body.
• When using a chemical cloth for cleaning, read the cau-
tion provided with the chemical cloth product.
Product disposal/transfer
Images saved on the storage device used with this product
may lead to personal information leakage. When it is neces-
sary to dispose or give this product to someone, even when
for repair, make sure that there is no data on the hard disk
drives.
Precautions for use
Precautions
(continued)
