i-PRO WJ-NU101K Series User manual

Before attempting to connect or operate this product,
please read these instructions carefully and save this manual for future use.
The model number is abbreviated in some descriptions in this manual.
Installation Guide
Network Disk Recorder
Model No. WJ-NU101K Series
WJ-NU201K Series
WJ-NU300K Series
The Operating Instructions and Important Information (PDF) is on our support website
(https://i-pro.com/global/en/surveillance/documentation_database).
For professional use only
WJ-NU101K Series refer to WJ-NU101K, WJ-NU101KG and WJ-NU101KGV.
WJ-NU201K Series refer to WJ-NU201K, WJ-NU201KG and WJ-NU201KGV.
WJ-NU300K Series refer to WJ-NU300K, WJ-NU300KG and WJ-NU300KGV.

2
Contents
Introduction.............................................................................................................................. 4
Standard accessories ............................................................................................................................................................... 4
About the user manuals ............................................................................................................................................................4
About the symbol mark.............................................................................................................................................................4
When the product is accessible from the Internet .................................................................................................................... 5
GPL/LGPL.................................................................................................................................................................................5
AVC Patent Portfolio License.................................................................................................................................................... 5
Precautions for installation........................................................................................................................................................5
Basic operations .......................................................................................................................................................................7
Setup menu...............................................................................................................................................................................9
Operations flow ..................................................................................................................... 10
1
Installation of the hard disk drive ................................................................................... 12
Install the hard disk drives ......................................................................................................................................................12
(When replacing the hard disk drives)..................................................................................................................................... 13
2 Installation ........................................................................................................................ 14
Rack mounting........................................................................................................................................................................14
Install vertically........................................................................................................................................................................15
Wall Mounting .........................................................................................................................................................................16
3 Connections...................................................................................................................... 17
Connection of cameras, a mouse and a PC ...........................................................................................................................17
Connection of monitors ..........................................................................................................................................................18
How to use the terminals of the ALARM/CONTROL .............................................................................................................. 19
ALARM/CONTROL terminal on the rear side.......................................................................................................................... 19
Connection example for emergency recording....................................................................................................................... 19
Time and polarities of the ALARM/CONTROL connector.......................................................................................................21
Connect AC adapter ...............................................................................................................................................................22
4 Turn on the devices.......................................................................................................... 23
Turn on the power of the recorder .......................................................................................................................................... 23
(When turn off the power of the recorder)............................................................................................................................... 24
Troubleshooting..................................................................................................................... 25

Important Information
Refer to the Important Information (PDF) on our support website for the following items.
Safety Information · Important safety instructions
Introduction · Preface
· System requirements for a PC
· Network security
Precautions · Precautions for use
Major operating controls · Major operating controls and their functions
User management · User/Host management
Others · Specifications
Operating Instructions
Refer to the Operating Instructions (PDF) on our support website for the following items.
Setup via recorder's main
monitor
· Basic setup
Set up date & time and language [Date/Language]
Camera setup [Camera]
Set up recording/events [REC & event]
· Advanced setup
Configure the settings relating to monitors [Monitor]
Configure the settings relating to network [Network]
Configure the settings relating to the user management [User management]
Configure the settings relating to maintenance [Maintenance]
Manage the hard disk drives [HDD management]
Configure the settings relating to the security [Security]
· Lists of the setting items
Operation via recorder's main
monitor
· Monitor live images
Operate the camera
· Event function
· Record images
· Play recorded images
· Useful functions
Copy recorded images
Play back copied images with this recorder
Operation via PC web browser · Monitor live images
Operate the camera
· Event function
· Play recorded images
· Copy and download
Copy recorded images
Download
Play back the copied/downloaded images on a PC
· Setup
3
Contents (continued)

4
Introduction
About the user manuals
About the symbol mark
There are 5 manuals provided for this product as follows.
Installation Guide (this book): Contains procedures of how to install/connect this product with devices.
Important Information (PDF): Contains preface, precautions, and major operating controls and their functions and
specications.
Refer to our support website
(https://i-pro.com/global/en/surveillance/documentation_database).
Operating Instructions (PDF): Contains descriptions of how to congure the required settings and how to operate
this product.
Refer to our support website.
Easy Start Guide: This guide describes how to set up the minimum required settings for this product.
Quick Reference Guide: Contains descriptions of how to operate functions frequently used.
"WJ-NU101", "WJ-NU201", and "WJ-NU300" in this manual refer to WJ-NU101K Series, WJ-NU201K Series, WJ-NU300K
Series respectively.
Unless otherwise specified, the descriptions of installation, connection, etc. in this manual are based on the WJ-NU101 as an
example and the descriptions of the screens are based on the WJ-NU300.
For the latest information on the part numbers, versions and network cameras that can be connected (hereinafter referred to as
cameras), and information such as the addition of functions by upgrading the software of this product, please refer to our support
website (https://i-pro.com/global/en/surveillance/training_support/support/technical_information).
In the manuals of this product, the personal computer hereinafter referred to as PC.
The external appearance in the document may differ from the actual product within no influence range on operation due to
improvement of the product.
The explanation of the symbol marks used in this product are as follows.
Alternation current symbol Computer network
Direct current sysmbol Mouse port
For indoor use only USB port
Polarity of d.c. power connector Functionl earthing;functional
grounding (US) symbol
Mouse ........................................................................................................1 pc.
Installation Guide ........................................................................................1 pc.
Easy Start Guide.........................................................................................1 pc.
Quick Reference Guide...............................................................................1 pc.
Cable Clamp (for DC cable) ........................................................................1 pc.
Switching Power Adapter (hereinafter, AC power adapter)..........................1 pc.
Powewr Cord (WJ-NU101K, WJ-NU201K, WJ-NU300K)............................1pc.
Powewr Cord(WJ-NU101KG, WJ-NU201KG, WJ-NU300KG).....................2pcs.
Powewr Cord(WJ-NU101KGV, WJ-NU201KGV, WJ-NU300KGV) ..............1pc.
Standard accessories

5
Introduction (continued)
• This product contains software licensed under GPL (GNU General Public License), LGPL (GNU Lesser General Public
License), etc.
• Customers can duplicate, distribute and modify the source code of the software under license of GPL and/or LGPL.
• For details on open source software licenses and source code, on the "Maintenance > System Management" page of the
browser settings of this product, click "Click here for more inforamtion on the OSS used in this product." and then read the
information displayed.
• Please note that i-PRO Co., Ltd. shall not respond to any inquiries regarding the source code.
THIS PRODUCT IS LICENSED UNDER THE AVC PATENT PORTFOLIO LICENSE FOR THE PERSONAL USE OF A CONSUMER
OR OTHER USES IN WHICH IT DOES NOT RECEIVE REMUNERATION TO (i) ENCODE VIDEO IN COMPLIANCE WITH THE
AVC STANDARD ("AVC VIDEO") AND/OR (ii) DECODE AVC VIDEO THAT WAS ENCODED BY A CONSUMER ENGAGED IN A
PERSONAL ACTIVITY AND/OR WAS OBTAINED FROM A VIDEO PROVIDER LICENSED TO PROVIDE AVC VIDEO.
ADDITIONAL INFORMATION MAY BE BTAINED FROM MPEG LA, L.L.C.
SEE HTTP://WWW.MPEGLA.COM
GPL/LGPL
AVC Patent Portfolio License
This product is designed to be used indoors.
This product is not operable outdoors. Do not expose this
product to direct sunlight for hours and do not install the
product near a heater or an air conditioner. Otherwise, it may
cause deformation, discoloration and malfunction.
Keep this product away from water and moisture.
i-PRO Co., Ltd. assumes no responsibility for injuries
or property damage resulting from failures arising out
of improper installation or operation inconsistent with
this documentation or through use of parts other than
this product, such as locally procured parts.
Do not place this product in the following places:
• Locations exposed to direct sunlight
• Locations subject to having strong vibration or impact
• Locations near magnetic eld sources such as a
television or speakers
• Locations near the devices that emit large sound and
generate vibration by sound pressure
• Locations where condensation forms easily, where
temperature changes greatly or where humidity level is
high
• Locations subject to steam and oil smoke such as a
kitchen
• Locations which are not level
• Locations subject to dust
• Locations where it may get wet from rain or water splash
Do not install this product in locations where the
product or the cables can be destroyed or damaged
by persons with malicious intent.
In order to prevent injury, the product must be
securely mounted to a wall according to Installation
Guide.
Precautions for installation
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.
When the product is accessible from the Internet

6
Introduction (continued)
Clear a space when placing this recorder.
When stacking multiple recorders, clear a space of more
than 5 cm {2 inches} from both sides, the top, the bottom
and the rear of the recorders.
More than
5 cm {2 inches} More than
5 cm {2 inches}
More than
5 cm {2 inches}
More than
5 cm {2 inches}
• Do not stack this product in a stack.
• Do not place anything that can generate vibration on the
top of this product.
Heat dissipation
To prevent this product from overheating, heed the
following. Failure to observe this may cause fire or trouble.
• Do not block the cooling fan outlet or the ventilation holes
with a wall, rack, cloth, etc. Maintain the product
periodically to prevent dust from blocking ventilation
holes.
• The lifetime of the cooling fan is limited by use. It is
recommended to replace them after around 30000
hours of operation. Contact your dealer for replacement
of the cooling fans.
• When the internal temperature rises, the fan noise may
become louder.
• Clear a space of more than 5 cm {2 inches} from both
sides, the top, and the rear of the product. Do not block
the ventilation holes on the front side since this product
is designed to cool the hard disk drives by drawing in air
from the front.
Avoid placing this product near noise sources
If the cables are placed near noise sources such as
fluorescent lamps, noises may be produced. In this case,
rewire avoiding the noise sources, or move the product to a
place far from the source.
Grounding
Confirm that the wire is connected from the SIGNAL GND
terminal to earth ground.
A grounding connection must be made before connecting
the power plug or this product to the main power supply.
When disconnecting the grounding wire, make sure that the
power plug of this product is disconnected from the main
power supply.
Avoid placing receptacles that contain liquids such as
water near this product.
If liquid spills onto this product, it may cause fire or an
electric shock.
Shielded (STP) LAN cables must be used with this unit
to ensure compliance with EMC standards. (Excluding
U.S.A. and Canada)
About sulfuration of rubber products
Do not leave rubber products containing sulfur (packing and
rubber feet) close to the recorder or in the same storing box.
Sulfur constituent from the rubber products may cause
sulfuration corrosion on electrical parts or terminals and
defects in the recorder.
Equipment classification and power source indication
label
Refer to the indication label on the bottom side of this unit
for the equipment classification, power source, and other
information.

7
Display method of the setting screen
Click the [Setup] button.
→ The top screen of the setup menu will be displayed.
Connection of a mouse
Connect the included mouse to the mouse connection port
on the rear side of the recorder.
→ The mouse cursor will be displayed on the main monitor.
Mouse operation
Left-click the desired buttons and tabs on the screen.
(Hereinafter, "Left-click..." will be described as "Click..." in
this document.)
When the entry field has the [▲] and [▼] buttons or the [▼]
button, the setting value can be changed using the mouse
wheel.
When no operation is made for 10 seconds or more, the
mouse cursor will be hidden. The mouse cursor will be dis-
played again when the mouse is moved.
This section explains operation of a mouse and the soft keyboard, and setting screen only.
The recorder can be operated using the mouse (included) connected to the mouse connection port on the rear side of the
recorder.
It is also possible to perform settings and some operations of the recorder from the web browser. Refer to the Operating
Instructions (PDF) for descriptions of how to operate from the web browser and the configurable settings using the web browser.
Basic operations
Introduction (continued)

8
About the operation of on-screen keyboard
Use the on-screen keyboard to enter characters for the setting items. When clicking the [ ] icon beside the entry field, the on-
screen keyboard will be displayed, and it will become possible to enter characters by clicking the character keys on the key-
board.
On-screen keyboard screen
[Del all] button
Deletes all the characters in the entry field.
[←]/[→] button
Move the cursor in the entry field to either direction.
[Delete] button
Deletes a character pointed by the cursor in the entry field.
[A/a] button
This button changes the characters to be entered between
capital letters and small letters.
[Next] button
Changes the keys to be displayed for character entry.
The displayed keys are changed as follows:
Keys for the language selected by the language selec-
tion pull-down menu →Combination characters →
Special characters
[Enter] button
Determines the entered characters and closes the on-screen
keyboard.
Note:
• Basic operations are also applied to the "Login" window
and registration window for license.
• Click the [×] button to close the window without deter-
mining the entered characters.
Entry field
Language selection pull-down menu
Click the [▼] button to select the language
for character entry.
Introduction (continued)

9
Configuration of each setting item in the setup menu should be completed in advance to use this recorder.
The setup menu has the following levels for the setting items. On "Easy Start", the minimum settings required to operate the
recorder will be performed, but other settings will remain default. On the [Basic setup] or [Advanced setup] page, the settings can
be customized in accordance with a variety of operational modes.
The following is the example of the setup menu that describes the features and operations.
The setup menu will be displayed when clicking the [Setup] button (☞Page 7) at the upper right corner of the operational screen
on the main monitor.
The buttons of the setup pages will be displayed on the left column of the setup menu.
Setup menu
➀[Home] button
It is possible to return to the top screen (☞Page 7) of
the setup menu from any setup page.
➁Setup menu panel
Displays buttons of the setup pages.
➂[Easy Start] button
It is possible to configure the minimum settings required
to operate the recorder, such as date & time and cam-
era registration.
➃[Basic setup] – Setup page buttons
Each "Basic setup" page will be displayed.
➄[Advanced setup] button
The buttons to open the corresponding setup pages of
the "Advanced setup" menu will be displayed. When
clicking this button again, the buttons will be hidden.
➅[Advanced setup] – Setup page buttons
Each "Advanced setup" page will be displayed.
➆Hierarchical display
The name of the current setup page will be displayed in
the hierarchy. The tab name will also be included.
➇Setup page
Displays each setup page. If the current setup page is
composed of two or more tabs, it is possible to change
the page display by clicking the tabs.
➈[Exit] button
Applies the settings to the recorder and closes the setup
menu to return to the operational screen (☞Page 11).
Except for some cases, the descriptions of this document
follow the hierarchical display and setup pages.
Important:
• If the settings are applied, all login users will be forcibly
logged out.
Introduction (continued)
➀
➁
➃
➂
➄
➅➇
➆
➈

10
1Installation of the hard disk drive
☞Page 12
2Installation
☞Page 14
3Connections
☞Page 17
4Turn on the devices
☞Page 23
Install the hard disk drives in the recorder.
Install this product on a rack or wall.
When using it flat without installation, go to Step 3.
Connect a camera, mouse, PC, monitor, alarm input/output
cable, AC adapter, etc. to this product.
Turn on the power to launch in the following order.
①Turn on the power of the monitor.
②Turn on the power of the recorder.
③Register as an administrator.
• The main monitor is required for the settings.
* The settings can be done through a web browser on the PC (Refer to the Operating
Instructions (PDF)).
• The PC is required for reading the Important Information, the Operating Instructions
(PDF) and camera settings.
Operations ow
5Congure the minimum settings
[Easy Start]
☞Refer to the attached "Easy Start Guide"
Setup
☞Operating Instructions
(PDF le on our support
website)
Start operations
Register the date & time and cameras on "Easy Start".
When it is not necessary to change other default settings, it
is possible to start operations.
If necessary, perform the detailed settings for each function.
When the camera image is displayed on the main monitor or
the web browser on the PC and can be recorded or played,
the recorder is ready for operation.

Example of an operational screen
11
Operations ow (continued)

12
Before installing the hard disk drives, turn off the power of the recorder first. When replacing the hard disk drives, the procedures
will be same as those of installation. When installing or replacing the hard disk drives for playback use only (hard disk drives that
are formerly used for recording), perform the link process.
Important:
• Firstly, turn off the power of the recorder.
• To discharge your own static electricity, touch a metal part such as a work desk with your hand before starting work.
• HDD is a precision device. Handle carefully so as not to give strong impacts.
• When storing the HDD for a long period of time, it is recommended to be in an environment with the temperature below
35°C, the humidity below 60% and no condensation.
• When handling the HDD, hold it by the side. Make sure not to touch the label surface or the board surface of the HDD.
Note:
• Hard disk drives are locally procured. Contact your dealer for purchasing, installing, and replacing the hard disk drives.
Install the hard disk drive
1 Installation of the hard disk drive
Step 1
Unplug the DC plug of the AC power adapter from the DC
jack of the recorder.
Step 2
Remove the two screws on the left and right sides of the
main unit, remove the three screws on the back, and then
remove the top cover.
Step 3
Clip the top of the hook on the HDD HOLDER TOP with your
finger and thumb. Push inward with your thumb to release
the hook, and open the HDD HOLDER TOP.
HDD HOLDER TOP
Hook
HDD HOLDER BASE
Step 4
Remove the AIR CAP that protects the cable connector.
Step 5
Tilt the HDD at an angle and insert the cable connected to
the board into the HDD.
HDD
Cable
Step 6
Make sure that the cable passes through the HDD HOLDER
BASE slot so that they do not come apart, and place the
HDD with the cable plugged in on the HDD HOLDER BASE.
If the cable is not threaded through the slot, pass it through
before placing the HDD.
Pass the cable through the
HDD HOLDER BASE slot.
HDD

13
(When replacing the hard disk drives)
When replacing a hard disk drive with another one, it is necessary to perform the removal process. In this case, do the
following.
Step 1
Perform the removal process of the hard disk drive.
(☞Operating Instructions (PDF))
Step 2
Turn off the power of the recorder. (☞Page 24)
Step 3
Remove the existing HDD and install a new HDD by
refering to the above procedures.
Step 4
Turn on the power of the recorder. (☞Page 20)
→ New hard disk drive will be formatted automatically.
When the formatting is completed, the hard disk
drive will become operable.
When the hard disk drive is formerly used for record-
ing, perform the link process (☞Operating
Instructions (PDF)) on the "HDD management" page.
The status of hard disk drive can be checked on the
setup menu - the "Maintenance" page - the "HDD
information" tab. (☞Operating Instructions (PDF))
1 Installation of the hard disk drive (continued)
Step 7
Pass the hook of the HDD HOLDER TOP through the inside
of the HDD HOLDER BASE. Push in the arrow on the HDD
HOLDER TOP, close the HDD HOLDER TOP, and then fix
HDD.
Hook
Step 8
Install the top cover as before, and tighten the two screws
on the left and right sides of the main unit, and the three
screws on the back to secure it.

14
2 Installation
Rack mounting
Use a rack equivalent to the EIA standard for mounting this product.
* EIA standard equivalent (manufactured by other companies): EIA 19-inch, depth of 550 mm or more
Note:
• Use four M5 × 12 mm screws (locally procured) to install the recorder in a rack.
• The illustrations on this page omit details of the shape.
Step 1
Remove the four rubber feet from the bottom of the
recorder.
Remove the rubber feet
Step 2
Remove the screws (2 pcs.) at the front of both sides
of the product.
Keep the removed screws (M3 × 6 mm) securely.
Step 3
Attach the rack mount brackets (WV-QRM101: option)
to both sides of the recorder.
Secure with rack mount bracket fixing screws (4 pcs.)
(included with WV-QRM101).
• Screw tightening torque:
0.59 N · m to 0.78 N · m (6.0 kgf · cm to 8.0 kgf · cm)
{0.43 lbf · ft - 0.58 lbf · ft}
Note:
• Use the following standard accessories included with the
rack mount bracket WV-QRM101.
Rack mount bracket (large) × 1,
Rack mount bracket (small) × 1
Rack mount bracket xing screws (M3 × 10 mm) × 4
Rack mount bracket fixing screw
(M3 × 10 mm: included with
WV-QRM101) × 2
Rack mount bracket
(small)
Rack mount bracket fixing screw
(M3 × 10 mm: included with
WV-QRM101) × 2
Rack mount bracket
(large)
Note:
• For positioning of the forward screw holes, tighten from
the screws marked with ★.
• Mounting bracket (large) and mounting bracket (small)
can be used interchangeably on both sides.
Step 4
Install the recorder in the rack by using four rack
mounting screws.
Secure with rack mounting screws (4 pcs.).
• Screw tightening torque:
2.0 N · m to 2.4 N · m (20.5 kgf · cm to 24.5 kgf · cm)
{1.48 lbf · ft - 1.78 lbf · ft}
Rack mounting screws
(M5 × 12 mm, locally procured)
Important:
• The operating temperature range of this product is
0 °C ~ +45 °C.
* HDDs deteriorate at high temperatures, affecting their
service life. It is recommended that the product
(including the AC adapter) be used at a temperature of
about +25 °C.
• The following measures should be taken when installing
the rack to ensure that the product is used within the
operating temperature range.
嵣Install a fan or other equipment to lower the
temperature inside the rack.
嵣Allow a distance of at least 1U (44 mm) between the
top and bottom of the product.
嵣Do not put doors on the front of the rack or block
the sides.
• Install the AC adapter so that the cable (including the DC
cable of the AC adapter) is not pulled or bent, and the
AC adapter itself is not suspended in midair.

15
Install vertically
Rack mount bracket WV-QRM001 (option) is required when installing the product vertically.
Important:
• Rack mount bracket (WV-QRM001) does not guarantee that the product will not tip over.
Step 1
Use a screwdriver to remove the screw at the front of
the right side face.
Remove the screw on the front right side
Keep the removed screws (M3 × 6 mm) securely.
Step 2
With the right side of the product facing down, install
the rack mound bracket (WV-QRM001: option) and
rubber foot.
Secure with rack mount bracket fixing screws (2 pcs.)
(included with WV-QRM001).
• Screw tightening torque:
0.59 N · m to 0.78 N · m (6.0 kgf · cm to 8.0 kgf · cm)
{0.43 lbf · ft - 0.58 lbf · ft}
Attach the rubber foot that is included with the WV-QRM001
to the position as shown in the illustration.
Note:
• Use the following standard accessories included with the
WV-QRM001 rack mount bracket.
Rack mount bracket × 1
Rack mount bracket xing screws (M3 × 10 mm) × 2
Rubber foot × 1
• This product can be mounted upside down, but the
distance from the product to the edge of the rack mount
bracket should be the same on both sides.
Rack mount bracket fixing screws × 2
(M3 × 10 mm: included with WV-QRM001)
Rubber foot × 1
(Included with WV-QRM001)
Attachment position of the rubber foot
13 mm {1/2 inches}
22 mm {7/8 inchis}
Important:
• The operating temperature range of the product is 0 °C
to +45 °C.
* HDDs deteriorate at high temperatures, affecting their
service life. It is recommended that the product
(including the AC adapter) be used at a temperature of
about +25 °C.
2 Installation (continued)

16
Wall Mounting
Rack mount bracket WV-QRM201 (set of 2, option) is required for wall mounting this product.
Step 1
Remove the screws (2 pcs.) at the front of both sides
of the product.
Keep the removed screws (M3 × 6 mm) securely.
Step 2
Attach the rack mount brackets (WV-QRM201: option)
to both sides of the product.
Secure with four rack mount bracket fixing screws (included
with WV-QRM201).
• Screw tightening torque:
0.59 N · m to 0.78 N · m (6.0 kgf · cm to 8.0 kgf · cm)
{0.43 lbf · ft - 0.58 lbf · ft}
Note:
• Use the following standard accessories included with the
WV-QRM201 rack mount bracket.
Rack mount brackets
× 2
Rack mount bracket xing screws (M3 × 10 mm) × 4
Rack mount bracket fixing screws
(M3 × 10 mm: included with WV-QRM201) × 4
Step 3
Mount the product vertically on the wall.
Securely fix the product to the wall with mounting screws
(4 pcs.) (M5, 10 mm or longer, locally procured).
Cooling fan outlet
Important:
• When installing the recorder on a wall, the height should
be no more than 2 m {6.6 ft}.
• Make sure to mount on the wall so that the cooling fan
outlets are always on the top or to the left and right. Do
not face the cooling fan outlets downwards.
• Make sure that the minimum pullout strength of the
mounting screws is 196 N (20 kgf) {44 lbf} per screw.
• Select the type of screws according to the material of
the wall. Do not use wood screws or nails.
• Adequately reinforce the wall when mounting on a wall
that is not strong enough, like a wall made of gypsum
boards.
• The operating temperature of the recorder ranges from
+0 °C to +45 °C {32 °F - 113 °F}.
* When the temperature of HDD rises, the features may
deteriorate and the service life may be affected. It is
recommended to use the recorder (including the AC
power adapter) at approx. +25 °C {77 °F}.
• Route the cables (including the DC cable of the AC
power adapter) properly so that they will not be pulled or
bent and the AC power adapter will not be hung in the
air.
Note:
• If you install the recorder on a wall in the direction as
shown in the above-mentioned STEP 3, the cooling fan
outlet will be located at the top, and the cooling effect
will be higher.
2 Installation (continued)

17
3 Connections
Connection of cameras, a mouse and a PC
Connect the camera to the camera port on the rear side of this product.
Connect the included mouse to the mouse connection port on the rear side of the recorder.
Connect PC to the PC port on the rear side of this product via a switching hub.
Connect this product to the camera and switching hub by using an Ethernet cable (locally procured: category 5e or higher,
straight).
IP address: 192.168.0.250
Subnet mask: 255.255.255.0
Default gateway: 192.168.0.1
IP address: 192.168.0.x (0, 1, 250, 255,
Except the camera's IP address)
Subnet mask: 255.255.255.0
Default gateway: 192.168.0.1
Recorder
WJ-NU101
Mouse (included)
Camera (×4 max.)
IP address (example): 192.168.0.101~
192.168.0.104
Subnet mask: 255.255.255.0
PoE+ Switching hub
(locally procured)
Network
Ethernet cable
(locally procured: category 5e or above, straight)
Note:
• The camera port comes with the PoE+ power supply function that complies with IEEE802.3at.
• If the camera is located at a distance (approx. 100 m) greater than the PoE+ power supply capacity, connect it to the PC
port via the PoE+ camera power supply unit (locally procured) or use WJ-PU201*(option).
• For WJ-NU300, connect the 9th to 16th cameras to the PC port via PoE+ Switching hub (locally procured) or use
WJ-PU201*(option).
* WJ-PU201 refer to WJ-PU201P (For U.S.), WJ-PU201/G (For Europe), WJ-PU201F/G (For Europe).

18
3 Connections (continued)
Connection of monitors
The main monitor (HDMI), which displays live images as well as playback images and setting menus, is connected to the HDMI
(MAIN) terminal using an HDMI cable (locally procured). The sub monitor (HDMI) is also connected to the HDMI (SUB) terminal
using an HDMI cable (locally procured).
Sub monitor (HDMI)Main monitor (HDMI)
HDMI cable (locally procured)HDMI cable (locally procured)
Recorder
WJ-NU101
Note:
• Use a "High Speed HDMI®Cable". Also, when the main monitor is used in 4K/30P, use a 10.2 Gbps compatible HDMI cable.
• To maintain the stable performance without deteriorating the image quality, use an HDMI cable which is 5 m or shorter.
• Audio can be output from the main monitor.
• Audio cannot be output from the sub monitor.

19
How to use the terminals of the ALARM/CONTROL
The ALARM/CONTROL terminals on the rear side is used when connecting an external device such as a sensor that outputs
alarm signals or when installing an external alarm device such as a buzzer or a lamp outside.
Insert the unarmored cable into the ALARM/CONTROL terminals on the rear side.
* The cable should be a single or twisted wire with AWG 26~16 and an exposed length of 9 mm {11/32 inches}.
ALARM/CONTROL terminal on the rear side
Cable connections
②Insert the cable all the
way into the hole and
release the button.
①Press the button.
②
①
Terminals
Pin No. Signal Operation Remarks
1 Alarm input 1 Event action will be performed according to the
settings
Non-voltage make contact input
+3.3 V pull-up Approx. 23 kΩ
2 Alarm input 2
3 Alarm input 3
4 Alarm input 4
5 Emergency recording
input
Starting emergency recording signal input
6 Signal ground
7 Alarm output Alarm signal will be supplied at an event
occurrence
Open collector output
24 V DC max., –200 mA max.
8 Camera error output Signal output upon detection of a camera error
9HDD error output/
Recording error output
Signal output upon detection of an HDD error or
recording error in this product
10 General-purpose
input/output 1
•Input and output can be assigned in the setting
menu of this product.
•The default value of the setting menu is "Not
set"
Input:
Non-voltage make-contact input
3.3 V pull-up approx. 23 kΩ
Output:
Open collector output
Max. 24 V DC, -200 mA
11 General-purpose
input/output 2
12 +5 V output +5 V output +5 V±0.5 V, 200 mA max.
Connection example for emergency recording
When the external switch is turned on, emergency recording will start.
Recording time and recording rate for emergency recording differ according to the settings of "Emergency rec." on the setup
menu. (Refer to the Operating Instructions.)
5
(Emergency recording input)
(Signal ground)
External switch
6
3 Connections (continued)
Important:
Do not connect two or more wires to a single terminal.
When connecting two or more wires, branch the wires
outside the recorder before connection.

20
Connection example of control output
When an alarm device such as a buzzer or a lamp is connected, the signal output from terminal No.7 - No.9 can be used to noti-
fy the status by sounding a buzzer or lighting a lamp.
The following example is of a connection with the HDD error output /Recording error output terminal (pin no.9).
Alarming device
Relays, etc.*
* Attached when necessary
(HDD error output/Recording error output)
(Signal ground) 6
9
Alarm connection example
When a signal output from the other device is supplied to the Alarm input 1 terminal (pin No.1) or Alarm input 2 terminal (pin
No.2), recording or an alarm action will be performed in accordance with the settings. When an alarm device such as a buzzer, a
lamp, etc., is installed outside, connect them to the Alarm output terminal (pin No. 7).
(Alarm output)
2
6 17
Alarming device
Relays, etc.*
* Attached when necessary
Sensor
(Signal ground)
Door security
switch
(Alarm input 2)
(Signal ground)
(Alarm input 1)
3 Connections (continued)