APPENDIX A HDD CAPACITY CALCULATION ....................................... 207
APPENDIX B COMPATIBLE BACKUP DEVICES ....................................... 209
Appendix B-1 Compatible USB list .......................................................................................... 209
Appendix B-2 Compatible SD Card list ................................................................................... 210
Appendix B-3 Compatible Portable HDD list .......................................................................... 210
Appendix B-4 Compatible USB DVD List ............................................................................... 210
Appendix B-5 Compatible SATA DVD List .............................................................................. 210
Appendix B-6 Compatible SATA HDD List ............................................................................. 211
APPENDIX C COMPATIBLE CD/DVD BURNER LIST ............................. 215
APPENDIX D COMPATIBLE DISPLAYER LIST ....................................... 216
vi
APPENDIX E COMPATIBLE SWITCHER ................................................... 217
APPENDIX F COMPATIBLE WIRELESS MOUSE LIST ........................... 218
APPENDIX G EARTHING ................................ ......................................... 219
APPENDIX H TOXIC OR HAZARDOUS MATERIALS OR ELEMENTS ...... 225
vii
Welcome
Thank you for purchasing our HD AVS DVR!
This user’s manual is designed to be a reference tool for the installation and operation of
your system.
Here you can find information about this series hybrid standalone DVR features and
functions, as well as a detailed menu tree.
Before installation and operation please read the following safeguards and warnings
carefully!
viii
Important Safeguards and Warnings
1.Electrical safety
All installation and operation here should conform to your local electrical safety codes.
The product must be grounded to reduce the risk of electric shock.
We assume no liability or responsibility for all the fires or electrical shock caused by
improper handling or installation.
2.Transportation security
Heavy stress, violent vibration or water splash are not allowed during transportation,
storage and installation.
3.Installation
Keep upwards. Handle with care.
Do not apply power to the DVR before completing installation.
Do not place objects on the DVR.
4.Qualified engineers needed
All the examination and repair work should be done by the qualified service engineers.
We are not liable for any problems caused by unauthorized modifications or attempted
repair.
5.Environment
The DVR should be installed in a cool, dry place away from direct sunlight, inflammable,
explosive substances and etc.
6. Accessories
Be sure to use all the accessories recommended by manufacturer.
Before installation, please open the package and check all the components are included.
Contact your local retailer ASAP if something is broken in your package.
7. Lithium battery
Improper battery use may result in fire, explosion, or personal injury!
When replace the battery, please make sure you are using the same model!
1
1 FEATURES AND SPECIFICATIONS
1.1 Overview
The hybrid standalone series DVR is an excellent digital monitor product designed for
security field.
It adopts embedded Linux OS to maintain reliable operation. Popular H.264 compression
algorithm and G.711 audio compression technology realize high quality, low bit stream.
Unique frame by frame play function is suitable for detailed analysis. It has various
functions such as record, playback, monitor at the same time and can guarantee audio
video synchronization. This series product has advanced technology and strong network
data transmission function.
This series device adopts embedded design to achieve high security and reliability. It can
work in the local end, and at the same time, when connecting it to the professional
surveillance software (PSS), it can connect to the security network to realize strong
network and remote monitor function.
This series product can be widely used in various areas such as banking,
telecommunication, electric power, interrogation, transportation, intelligent resident zone,
factory, warehouse, resources, and water conservancy.
1.2 Features
This series product has the following features:
Real-time surveillance
Support VGA port and HDMI port. Realize the surveillance through displayer. Support
HDMI, VGA, and TV output at the same time.
Storage function
Special data format to guarantee data security and can remove the risk of the vicious data
modification. Support digital watermark.
Compression format
Support multiple-channel audio and video. An independent hardware decodes the audio
and video signal from each channel to maintain video and audio synchronization.
Backup function
Support backup operation via USB port (such as U disk, portable HDD, burner)
Client-end user can download the file to local HDD to backup via network.
Support each channel real-time record independently, and at the same time it can support
search, forward play, network monitor, record search, download and etc.
Support various playback modes: slow play, fast play, backward play and frame by frame
play.
Support time title overlay so that you can view event accurate occurred time
Support customized zoom function during the preview.
Network operation
Support network remote real-time monitor, remote record search and remote PTZ control.
Alarm activation function
Several relay alarm outputs to realize alarm activation and on-site light control.
The alarm input port and output has the protection circuit to guarantee device safety.
Communication port
RS485 port can realize alarm input and PTZ control.
RS232 port can connect to keyboard to realize central control, and can also connect to PC
COM to upgrade system and realize maintenance, and matrix control.
Standard Ethernet port can realize network access function.
The dual-network port has the multiple-access, fault-tolerance, load-balance setup mode.
PTZ control
Support PTZ decoder via RS485.
Intelligent operation
Mouse operation function
In the menu, support copy and paste setup function
UPNP (Universal Plug and Play)
Establish mapping connection between LAN and WAN via UPNP protocol.
Slight function differences may be found due to different series.
1.3Specifications
1.3.1 AVR-1404/AVR-1408/AVR1416
3
Model
Parameters
AVR-1404
AVR-1408
AVR-1416
Video Frame
Rate
PAL:1~25f/s;NTSC:1~30f/s
Video Bit Rate
1536Kbps-4096Kbps,
For 720P:default value is 2Mbps,max value is 4Mbps
Bit Stream
Type
Video stream/composite stream
Dual-Stream
Support
Audio
Encode
Standard
G.711A, G.711U, PCM
Audio
Sampling Rate
8KHz,16Bit
Audio Bit Rate
64Kbps
Video Port
Analog Video
Input
4-ch, BNC port
8-ch, BNC port
16-ch, BNC port
Network Video
Input
Switch 2 analog channels to the IP channels(8Mbps)
Video Output
1-ch VGA output,
1-ch HDMI output,
HDMI/ VGA video output at the same time (VGA/HDMI of the same
video source)
Loop Output
N/A
Matrix Output
N/A
Audio Port
Audio Input
4-ch,RCA port, audio via coaxial cable
Audio Output
1-ch,RCA port
Bidirectional
Talk Input
Support(Reuse the audio port)
Record
Record Mode
Auto record, manual record, motion detect record, alarm record
2048Kbps-6144Kbps Kbps-4096Kbps,
For 1080P:default value is 4Mbps,max value is 6Mbps
Bit Stream
Type
Video stream/composite stream
Dual-Stream
Support
Audio
Encode
Standard
G.711A, G.711U, PCM
Audio
Sampling Rate
8KHz,16Bit
Audio Bit Rate
64Kbps
Video Port
Analog Video
Input
4-ch, BNC port
8-ch, BNC port
Network Video
Input
Switch 2 analog channels to the IP channels(16Mbps)
Video Output
1-ch VGA output,
1-ch HDMI output,
HDMI/ VGA video output at the same time (VGA/HDMI of the same
video source)
Loop Output
N/A
Matrix Output
N/A
Audio Port
Audio Input
4-ch,RCA port, audio via coaxial cable
Audio Output
1-ch,RCA port
1.3.2 AVR-1704/AVR-1708
5
Model
Parameters
AVR-1704
AVR-1708
Bidirectional
Talk Input
Support(Reuse the audio port)
Record
Record Mode
Auto record, manual record, motion detect record, alarm record
Record
Playback
Max 4-ch playback
Max 16-ch playback
Backup Mode
HDD, burner, flash disk, network backup.
Alarm
Alarm Input
4-ch alarm input
16-ch alarm input
Alarm Output
3-ch alarm output
HDD
HDD Port
2 SATA ports. Does not support eSATA port.
Space/HDD
4T
Communication
Port
Network
1 RJ45 port, 1000Mbps Ethernet port
Communication
RS485 port
USB
2 USB ports
Other
Power
DC12V
Power
Consumption
≤30W(exclude HDD)
Working
Temperature
-10℃-+55℃
Working
Humidity
10%~90%
Dimension
1U case,375mm(W)×280mm(D)×50mm(H)
Weight
1.5kg~2.5kg(exclude HDD)
Installation
Mode
Desk installation
6
Name
Icon
Function
Power button
Power button, press this button for three seconds to boot up
or shut down DVR.
Shift
Shift
In textbox, click this button to switch between numeral,
English(Small/Capitalized),donation and etc.
Up/1Down/4
、
Activate current control, modify setup, and then move up and
down.
Increase/decrease numeral.
Assistant function such as PTZ menu.
In text mode, input number 1/4 (English character G/H/I)
Left/2
Right/3
Shift current activated control,
When playback, click these buttons to control playback bar.
In text mode, input number 2(English character A/B/C)
/3(English character D/E/F)
ESC
ESC
Go to previous menu, or cancel current operation.
When playback, click it to restore real-time monitor mode.
Enter
ENTER
Confirm current operation
Go to default button
Go to menu
Record
REC
Manually stop/start recording, working with direction keys
or numeral keys to select the recording channel.
Slow play/8
Multiple slow play speeds or normal playback.
In text mode, input number 8 (English character T/U/V).
2 Overview and Controls
This section provides information about front panel and rear panel. When you install this
series DVR for the first time, please refer to this part first.
2.1 Front Panel
The front panel is shown as below. See Figure 2-1.
Figure 2-1
Please refer to the following sheet for front panel button information.
7
Assistant
Fn
One-window monitor mode, click this button to display
assistant function: PTZ control and image color.
Backspace function: in numeral control or text control, press
it for 1.5seconds to delete the previous character before the
In motion detection setup, working with Fn and direction keys
to realize setup.
In text mode, click it to switch between numeral, English
character(small/capitalized) and etc.
Realize other special functions.
Fast play/7
Various fast speeds and normal playback.
In text mode, input number 7 (English character P/Q/R/S).
Play previous/0
|
In playback mode, playback the previous video
In text mode, input number 0.
Reverse/Pause/6
||
In normal playback or pause mode, click this button to
reverse
playback
In reverse playback, click this button to pause playback.
Play Next/9
|
In playback mode, playback the next video
In menu setup, go to down ward of the dropdown list.
In text mode, input number 9 (English character W/X/Y/Z)
Play/Pause /5
||
In normal playback click this button to pause playback
In pause mode, click this button to resume playback.
In text mode, input number 5(English character J/K/L).
USB port
To connect USB storage device, USB mouse.
Network
abnormal
indication light
Net
Network error occurs or there is no network connection, the
light becomes red to alert you.
HDD abnormal
indication light
HDD
HDD error occurs or HDD capacity is below specified
threshold value, the light becomes red to alert you.
Record light
1-16
System is recording or not. It becomes on when system is
recording.
IR Receiver
IR
It is to receive the signal from the remote control.
2.2 Rear Panel
8
SN
Icon
Name
Note
1 Power switch
Power on/off button.
2
1~4
Alarm input
port 1~4
There are two types; NO (normal open)/NC
(normal close).
When your alarm input device is using external
power, please make sure the device and the DVR
have the same ground.
NO1~NO3
Alarm output
port 1~3
3 groups of alarm output ports. (Group 1:port
NO1~C1,Group 2:port NO2~C2,Group 3:port
NO3~C3)).Output alarm signal to the alarm
device. Please make sure there is power to the
external alarm device.
NO:Normal open alarm output port.
C:Alarm output public end.
C1~C3
3 Power input
port
Input DC 12V/5A.
4
AB
RS-485
communicati
on port
RS485_A port. It is the cable A. You can connect
to the control devices such as speed dome PTZ.
RS485_B.It is the cable B. You can connect to
the control devices such as speed dome PTZ.
5
AUDIO IN
Audio input
port
It is to receive the analog audio signal output from the
devices such as mike phone, pickup.
6
VIDEO IN
Video input
port
Connect to analog camera to input video signal.
7 GND
Alarm input ground port.
8
AUDIO
OUT
Audio output
Audio output port. It is to output the analog audio
signal to the devices such as the sound box.
This series products’ rear panel is shown as below. See Figure 2-2.
The following figure is based on the AVR-1404 series product.
Figure 2-2
Please refer to the following sheet for detailed information.
9
SN
Icon
Name
Note
port
9
HDMI
High
Definition
Media
Interface
High definition audio and video signal output port. It
transmits uncompressed high definition video and
multiple-channel data to the HDMI port of the display
device.
10 USB2.0 port
USB2.0 port. Connect to mouse, USB storage device,
USB burner and etc.
11
VGA
VGA video
output port
VGA video output port. Output analog video signal. It
can connect to the monitor to view analog video.
12 Network port
1000M Ethernet port
When connect the Ethernet port, please use crossover cable to connect the PC and use
the straight cable to connect to the switch or router.
2.3 Connection Sample
Please refer to the following figure for detailed information. See Figure 2-3.
The following interface is based on the AVR-1404 series product.
10
Figure 2-3
2.4 Remote Control
The remote control interface is shown as in Figure 2-4.
Please note remote control is not our standard accessory and it is not included in the
accessory bag.
11
Serial Number
Name
Function
1
Power button
Click it to boot up or shut down
the device.
2
Address
Click it to input device number, so
that you can control it.
3
Forward
Various forward speeds and
normal speed playback.
4
Slow play
Multiple slow play speeds or
normal playback.
5 Next record
In playback mode, playback the
next video.
6 Previous record
In playback mode, playback the
previous video.
7
Play/Pause
In pause mode, click this button
to realize normal playback.
In normal playback click this
button to pause playback.
In real-time monitor mode, click
this button to enter video search
menu.
Reverse/pause
Reverse playback pause mode,
Figure 2-4
12
8
click this button to realize normal
playback.
In reverse playback click this
button to pause playback.
9 Esc.
Go back to previous menu or
cancel current operation (close
upper interface or control)
10
Record
Start or stop record manually
In record interface, working with
the direction buttons to select the
record channel.
Click this button for at least 1.5
seconds, system can go to the
Manual Record interface.
11
Direction keys
Switch current activated control,
go to left or right.
In playback mode, it is to control
the playback process bar.
Aux function(such as switch the
PTZ menu)
12
Enter /menu key
go to default button
go to the menu
13
Multiple-window switch
Switch between multiple-window
and one-window.
14
Fn
In 1-ch monitor mode: pop up
assistant function: PTZ control
and Video color.
Switch the PTZ control menu in
PTZ control interface.
In motion detection interface,
working with direction keys to
complete setup.
In text mode, click it to delete
character.
15
0-9 number key
Input password, channel or
switch channel.
Shift is the button to switch the
input method.
Left click
mouse
System pops up password input dialogue box if you have not logged in.
In real-time monitor mode, you can go to the main menu.
2.5 Mouse Control
13
When you have selected one menu item, left click mouse to view menu
content.
Implement the control operation.
Modify checkbox or motion detection status.
Click combo box to pop up drop down list
In input box, you can select input methods. Left click the corresponding
button on the panel you can input numeral/English character
(small/capitalized). Here ← stands for backspace button. _ stands for
space button.
In English input mode: _stands for input a backspace icon and ←
stands for deleting the previous character.
In numeral input mode: _ stands for clear and ← stands for
deleting the previous numeral.
When input special sign, you can click corresponding numeral in the
front panel to input. For example, click numeral 1 you can input“/” , or
you can click the numeral in the on-screen keyboard directly.
Double left
click mouse
Implement special control operation such as double click one item in
the file list to playback the video.
In multiple-window mode, double left click one channel to view in
full-window.
Double left click current video again to go back to previous
multiple-window mode.
14
Right click
mouse
In real-time monitor mode, pops up shortcut menu: one-window,
four-window, nine-window and sixteen-window, Pan/Tilt/Zoom, color
setting, search, record, alarm input, alarm output, main menu.
Among which, Pan/Tilt/Zoom and color setting applies for current
selected channel.
If you are in multiple-window mode, system automatically switches to
the corresponding channel.
Exit current menu without saving the modification.
Press
middle
button
In numeral input box: Increase or decrease numeral value.
Switch the items in the check box.
Page up or page down
Move
mouse
Select current control or move control
Drag
mouse
Select motion detection zone
Select privacy mask zone.
2.6Virtual Keyboard & Front Panel
2.6.1 Virtual Keyboard
The system supports two input methods: numeral input and English character (small and
capitalized) input.
Move the cursor to the text column, the text is shown as blue, input button pops up on the
right. Click that button to switch between numeral input and English input (capitalized and
small), Use > or < to shift between small character and capitalized character.
2.6.2 Front Panel
Move the cursor to the text column. Click Fn key and use direction keys to select number
you wanted. Please click enter button to input.
15
1. Loosen the screws of the
upper cover and side panel.
2. Fix four screws in the HDD
(Turn just three rounds).
3. Place the HDD in accordance with
the four holes in the bottom.
3Installation and Connections
Note: All the installation and operations here should conform to your local electric
safety rules.
3.1Check Unpacked DVR
When you receive the DVR from the forwarding agent, please check whether there is any
visible damage. The protective materials used for the package of the DVR can protect
most accidental clashes during transportation. Then you can open the box to check the
accessories.
Please check the items in accordance with the list. Finally you can remove the protective
film of the DVR.
Note
Remote control is not a standard accessory and it is not included in the accessory bag.
3.2 About Front Panel and Rear Panel
The model in the front panel is very important; please check according to your purchase
order.
The label in the rear panel is very important too. Usually we need you to represent the
serial number when we provide the service after sales.
3.3 HDD Installation
This series DVR has 1 to 2 HDDs (no limitation for capacity). Please use HDD of 7200rpm
or higher. Usually we do not recommend the HDD for the PC. You can refer to the
Appendix for recommended HDD brand.
All figures listed here for reference only.
Please follow the instructions listed below to install hard disk.
16
4. Turn the device upside down
and then turn the screws in
firmly.
5. Fix the HDD firmly.
6. Connect the HDD cable and
power cable.
7. Put the cover in accordance
with the clip and then place the
upper cover back.
8. Secure the screws in the
rear panel and the side panel.
3.4 Connecting Power Supply
Please check input voltage and device power button match or not.
We recommend you use UPS to guarantee steady operation, DVR life span, and other
peripheral equipments operation such as cameras.
3.5 Connecting Video Input and Output Devices
3.5.1 Connecting Video Input
The video input interface is BNC. The input video format includes: PAL/NTSC BNC
(1.0VB
The input video format: BNC(0.8VP-P,75Ω),
The video signal should comply with your national standards.
The input video signal shall have high SNR, low distortion; low interference, natural color
and suitable lightness.
Guarantee the stability and reliability of the camera signal:
The camera shall be installed in a cool, dry place away from direct sunlight, inflammable,
explosive substances and etc.
The camera and the DVR should have the same grounding to ensure the normal
operation of the camera.
Guarantee stability and reliability of the transmission lineBTTTB
Please use high quality, sound shielded BNC. Please select suitable BNC model
P- P ,
B75Ω.).
17
according to the transmission distance.
If the distance is too long, you should use twisted pair cable, and you can add video
compensation devices or use optical fiber to ensure video quality.
You should keep the video signal away from the strong electromagnetic interference,
especially the high tension current.
Keep connection lugs in well contactBTTTB
The signal line and shielded wire should be fixed firmly and in well connection. Avoid dry
joint, lap welding and oxidation.BTTT
3.5.2 Connecting Video Output
Video output includes a TBNC(PAL/NTSC, 1.0VP- P,75Ω)output, a VGA output and a
HDMI output.
System supports BNC, VGA and HDMI output at the same time.
When you are using pc-type monitor to replace the monitor, please pay attention to the
following points:
To defer aging, do not allow the pc monitor to run for a long time.
Regular demagnetization will keep device maintain proper status.
Keep it away from strong electromagnetic interference devices.
Using TV as video output device is not a reliable substitution method. You also need to
reduce the working hour and control the interference from power supply and other devices.
The low quality TV may result in device damage.
BNC port is adopted for audio input port.
Due to high impedance of audio input, please use active sound pick-up.
Audio transmission is similar to video transmission. Try to avoid interference, dry joint,
loose contact and it shall be away from high tension current.
3.6.2 Audio Output
The audio output signal parameter is usually over 200mv 1KΩ (BNC). It can directly
connect to low impedance earphone, active sound box or amplifier-drive audio output
device.
If the sound box and the pick-up cannot be separated spatially, it is easy to arouse
squeaking. In this case you can adopt the following measures:
Use better sound pick-up with better directing property.
Reduce the volume of the sound box.
Using more sound-absorbing materials in decoration can reduce voice echo and
improve acoustics environment.
Adjust the layout to reduce happening of the squeaking.
3.7 Alarm Input and Output Connection
Please read the followings before connecting.
1. Alarm input
a. Please make sure alarm input mode is grounding alarm input.
b. Grounding signal is needed for alarm input.
18
1,2,3,4,5,6,
7,8,9,10,11,
12,13,14,15,16
ALARM 1 to ALARM 16. The alarm becomes active in low voltage.
1-NO C,2-NO C,
There are three groups of normal open activation output (on/off
c. Alarm input needs the low level voltage signal.
d. Alarm input mode can be either NC (normal Open) or NO (Normal Close)
e. When you are connecting two DVRs or you are connecting one DVR and one other
device, please use a relay to separate them,
2. Alarm output
The alarm output port should not be connected to high power load directly (It shall be less
than 1A) to avoid high current which may result in relay damage. Please use the co
contactor to realize the connection between the alarm output port and the load.
3. How to connect PTZ decoder
a. Ensure the decoder has the same grounding with DVR, otherwise you may not control
the PTZ. Shielded twisted wire is recommended and the shielded layer is used to connect
to the grounding.
b. Avoid high voltage. Ensure proper wiring and some thunder protection measures.
c. For too long signal wires, 120Ω should be parallel connected between A, B lines on the
far end to reduce reflection and guarantee the signal quality.
d. “485 A, B” of DVR cannot parallel connect with “485 port” of other device.
e. The voltage between of A,B lines of the decoder should be less than 5v.
4. Please make sure the front-end device has soundly earthed.
Improper grounding may result in chip damage.
3.7.1 Alarm Input and Output Details
3.7.1.1AVR-1404/AVR-1408/AVR-1416
The interface is shown as in Figure 3-1.
Figure 3-1
You can refer to the following sheet for detailed information
19
3-NO C
button).
Earth cable.
1,2,3,4
ALARM 1 to ALARM 4. The alarm becomes active in low voltage.
NO1 C1,
NO2 C2,
NO3 C3,
There are three groups of normal open activation output (on/off
button)
3.7.1.2AVR-1704/AVR-1708
The interface is shown as in Figure 3-2.
Figure 3-2
3.7.2 Alarm Input Port
Please refer to the following sheet for more information.
Grounding alarm inputs. Normal open or Normal close type)
Please parallel connect COM end and GND end of the alarm detector (Provide
external power to the alarm detector).
Please parallel connect the Ground of the DVR and the ground of the alarm detector.
Please connect the NC port of the alarm sensor to the DVR alarm input(ALARM)
Use the same ground with that of DVR if you use external power to the alarm device.
Figure 3-3
20
Model:
JRC-27F
Material of the
touch
Silver
Rating
(Resistance
Load)
Rated switch capacity
30VDC 2A, 125VAC 1A
Maximum switch power
125VA 160W
Maximum switch voltage
250VAC, 220VDC
Maximum switch currency
1A
Insulation
Between touches with same
polarity
1000VAC 1minute
Between touches with different
polarity
1000VAC 1minute
Between touch and winding
1000VAC 1minute
Surge voltage
Between touches with same
polarity
1500V (10×160us)
Length of open
time
3ms max
Length of close
time
3ms max
Longevity
Mechanical
50×106 times (3Hz)
Electrical
200×103 times (0.5Hz)
Temperature
-40℃ ~+70℃
3.7.3 Alarm Output Port
Provide external power to external alarm device.
To avoid overloading, please read the following relay parameters sheet carefully.
RS485 A/B cable is for the A/B cable of the PTZ decoder.
T+,T-,R+,R- are four-wire double duplex RS485 port.
T+ T-: output wire
R+ R-: input wire
Relay Specification
3.8Other Interfaces
There are still other interfaces on the DVR, such as USB port.
21
4 Overview of Navigation and Controls
4.1 Boot up and Shutdown
4.1.1 Boot up
Before the boot up, please make sure:
The rated input voltage matches the device power on-off button. Please make sure
the power wire connection is OK. Then click the power on-off button.
Always use the stable current, if necessary UPS is a best alternative measure.
Please follow the steps listed below to boot up the device.
Connect the device to the monitor and then connect a mouse.
Connect power cable.
Click the power button at the front or rear panel and then boot up the device. After
device booted up, the system is in multiple-channel display mode by default.
4.1.2 Shutdown
Note
When you see corresponding dialogue box “System is shutting down…” Do not click
power on-off button directly.
Do not unplug the power cable or click power on-off button to shutdown device
directly when device is running (especially when it is recording.)
There are three ways for you to log out.
a) Main menu (RECOMMENDED)
From Main Menu->Shutdown, select shutdown from dropdown list.
Click OK button, you can see device shuts down.
b) From power on-off button on the front panel or remote control
Press the power on-off button on the DVR front panel or remote control for more than 3
seconds to shutdown the device.
c) From power on-off button on the rear panel.
4.1.3 Auto Resume after Power Failure
The system can automatically backup video and resume previous working status after
power failure.
4.1.4 Replace Button Battery
Please make sure to use the same battery model if possible.
We recommend replace battery regularly (such as one-year) to guarantee system time
accuracy.
Note:
Before replacement, please save the system setup, otherwise, you may lose the
data completely!
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