NVR H series device user manual
Updated September 29, 2025
NVR H is a network video recorder with HDMI output for home and office
video surveillance. You can connect and third-party IP
cameras to the device.
Users can view archived and live footage in Ajax apps or on a display
connected via the HDMI output. NVR H records the received data with
corresponding settings and a hard drive (not included). If the hard drive is
not installed, the video recorder is used only for integrating third-party IP
cameras into the Ajax system. NVR H provides users with video alarm
verification.
To set up NVR H, an internet connection is required. The video recorder
connects to the Ajax Cloud service via Ethernet using the corresponding
connector.
The device is available in several versions:
Ajax cameras
NVR HAC (8-ch);
Functional elements
NVR HAC (16-ch).
Buy a network video recorder of NVR H series
1. LED indicator.
2. SmartBracket mounting panel.
3. Holes for attaching the SmartBracket mounting panel to the surface.
4. Place to install a hard drive.
5. Hard drive latch.
6. A screw for attaching a hard drive latch.
7. Connector for the hard drive.
8. QR code with the device ID. Used to add NVR H to an Ajax system.
9. Button to reset parameters.
10. Holding screw. It is used to fix the device on the SmartBracket
mounting panel.
Operating principle
NVR H is a video recorder for connecting third-party IP cameras that have
ONVIF and RTSP protocols and . Allows you to install a
storage device with a memory capacity of up to 16 TB (not included in the
NVR H series package). Also, NVR H can work without a hard drive.
NVR H series features an HDMI output that allows video from connected
cameras to be viewed on a display, even when the video recorder is not
connected to the internet.
NVR H has two USB 2.0 (Type-A) ports for connecting a keyboard, mouse,
or USB flash drive. The maximum output current is 500 mA per port. If the
connected device requires more power to operate, provide an external
power supply for that device.
Using the , you can calculate the NVR H required storage
capacity and estimated recording time based on the settings.
NVR H enables users to:
11. USB connector.
12. HDMI connector.
13. Ethernet connector.
14. Power supply connector.
Ajax cameras
How to choose a hard drive
video storage calculator
1. Add and configure IP cameras (camera resolution, brightness,
contrast, etc.).
2. Watch video from added cameras in real-time with the ability to zoom.
3. Watch and export videos from the archive, navigating by the recording
chronology and calendar (if the hard drive is connected to the video
The video recording segments downloaded from NVR H have the Ajax digital
signature that verifies the integrity of the exported video. To verify the
authenticity of the downloaded video recordings, use the Ajax Media Player
software.
An admin or PRO with rights to configure the system can set up a
connection via ONVIF in and apps.
NVR H is designed for indoor installation. We recommend installing the
video recorder on a flat horizontal or vertical surface for better heat
exchange of the hard drive. Do not cover it with other items.
recorder).
4. Choose how to detect motion in the frame — on the camera or on the
NVR H.
5. Configure motion detection on NVR H (detection zones, sensitivity
level).
6. View the that combines images from all connected
cameras.
Video wall
7. that send a short video from the selected
camera to the Ajax app when the detector is triggered.
Create video scenarios
8. Configure connection via ONVIF to integrate the device with video
management systems (VMS) such as Milestone, Genetec, Axxon, and
Digifort.
9. Watch video on a display connected directly to NVR H via the HDMI
output.
Learn more about Ajax Media Player
How to download videos from the archive in Ajax apps
How to configure temporary camera video access
Ajax PRO Desktop Ajax Desktop
How to configure ONVIF authorization
Selecting the device location
It is advisable to choose an installation site where NVR H is hidden from
prying eyes, for example, in the pantry. It will help to reduce the likelihood
of sabotage. Note that the device is intended for indoor installation only.
The device is housed in a compact casing with active cooling. If NVR H is
installed in insufficiently ventilated rooms, the operating temperature of
the memory drive may be exceeded. Choose a hard, flat horizontal or
vertical surface for mounting the casing, and do not cover it with other
items.
Follow placement recommendations when designing the Ajax system for
an object. The security system should be designed and installed by
professionals. The list of authorized Ajax partners is .
Where not to install NVR H
Installation
available here
1. Outdoors. This may cause the breakdown of the video recorder.
2. Inside premises with temperature and humidity values that do not
correspond to the operating parameters.
1. Remove SmartBracket from the video recorder by pulling down the
back panel.
2. Secure SmartBracket to a hard, flat surface with the bundled screws.
Use all fixation points.
3. Lift the hard drive latch.
When replacing the hard drive, wait 10 seconds after disconnecting the
device from the power source. The hard drive contains rapidly rotating
platters. Sudden movements or impacts can disable the mechanism,
leading to physical damage and data loss.Do not move or flip NVR H until
the hard drive has stopped spinning.
4. Install the hard drive in the NVR H enclosure so that the connectors
match.
The LED indicator lights up yellow and turns white after the connection to
the Internet. If the connection to Ajax Cloud server fails, the LED indicator
lights up red.
Adding to the system
Before adding a device
5. Lower the hard drive latch.
6. Secure the hard drive in the NVR H enclosure with the bundled screw,
using the location for fixation.
7. Connect external power supply and Ethernet connection. Turn on the
power supply.
8. .Add the device to the system
9. Insert the video recorder into SmartBracket.
1. Install an .Ajax app
Only a PRO or a space admin with the rights to configure the system can add the
device to the space.
Adding to the space
The connected device will appear in the list of devices in the Ajax app.
NVR H only works with one space. To connect the video recorder to the
new space, remove NVR H from the device list of the old one. This must
be done manually in the Ajax app.
2. Log in to your or create a new one.account
3. Select a or create a new one.space
4. Add at least one .virtual room
5. Ensure the space is disarmed.
Types of accounts and their rights
1. Open the . Select the to which you want to add NVR H.Ajax app space
2. Go to the Devices tab and tap Add device.
3. Scan the QR code or enter it manually. Find the QR code on the back
of the enclosure under the SmartBracket mounting panel and on the
packaging.
4. Assign a name to the device.
5. Select a virtual room.
6. Tap Add.
7. Make sure that the video recorder is powered on and has access to
the Internet. The LED indicator should light white.
8. Tap Add.
Adding an IP camera to NVR H
You can calculate the number of cameras and NVRs that can be added to
the space using the .
The IP camera connected to the video recorder will appear in the list of
NVR H cameras in the Ajax app.
Managing NVR H via HDMI connection
Logging in
To start using NVR H with a display connected via the HDMI output, you
must log in to your Ajax account. There are two login options: as a local
user or with a cloud account.
video device calculator
To add an IP camera automatically: To add a third-party IP camera manu
1. Open the . Select the with NVR H added.Ajax app space
2. Go to the Devices tab.
3. Find NVR H in the list, and tap Cameras.
4. Tap Add camera.
5. Wait until the network scan is completed and the available IP cameras
connected to the local network appear.
6. Select the camera.
7. Enter the username and password (specified in the camera
documentation) if the camera is third-party and tap Add.
8. If the login and password are entered correctly, the video preview from
the added camera will appear. In case of an error, check the
correctness of the entered data and try again.
9. Make sure the video matches the added camera. Tap Next.
Logging in with a cloud account requires an internet connection. If NVR H is not
connected to the internet, you can only log in as a local user.
To log in as a local user:
To log in with a cloud account:
There are two ways to log in with a cloud account: using account
credentials or scanning a QR code.
Using account credentials:
Using a QR code:
1. Select the login option As local user.
2. Enter the local Username and Password in the corresponding fields.
3. (Optional) Enable Automatically log in to this account on restart.
4. Tap Log in.
1. Ensure NVR H is connected to the internet.
2. Select the login option With cloud account.
3. Select an account type.
4. Enter your Email and Password in the corresponding fields.
5. (Optional) Enable Automatically log in to this account on restart.
6. Tap Log in.
1. Ensure NVR H is connected to the internet.
2. Select the login option With cloud account.
3. Open an Ajax app on your mobile device and go to:
Menu → App settings → Sessions
Video wall and slideshow
The Video wall feature allows you to create custom layouts, manage
cameras, watch live video streams, access archived footage, and more —
all in a single interface.
NVR H features keyboard shortcuts to quickly and simply navigate the
video wall. These shortcuts give you instant access to key features and
help you work within the video wall.
A keyboard should be connected to the NVR H to use keyboard shortcuts.
Keyboard shortcuts to manage the archive
Keyboard shortcut Description
1 0.5x playback speed
2 1x playback speed (by default)
3 1.5x playback speed
4 2x playback speed
5 4x playback speed
6 8x playback speed
Space Play/pause
<, > Previous/next frame
F Maximize window
Esc Minimize window
Tab Archive entry/exit
4. Scan the QR code on the display.
What features are available in the video wall
Keyboard shortcuts to control PTZ cameras
Keyboard shortcut Description
Left/right arrow Pan left/right
Up/down arrow Tilt up/down
+ (plus key) Zoom in
– (minus key) Zoom out
Shift + left arrow Focus near
Shift + right arrow Focus far
1–9 Go to PTZ presets from 1 to 9
H Go to PTZ default settings
Device info
To open the Device info tab, select it from the top toolbar. This tab is only
available for users with admin rights.
The Device info tab includes the following sections:
App settings
The App settings menu allows you to configure general interface settings
for the display connected via HDMI.
To access App settings:
Overview — displays the NVR H and allows the admin to format
the hard drive or reboot the video recorder if any issue occurs.
states
Connection — contains network settings.
Archive — provides information about the video recorder’s storage and
related settings. The Format hard drive option is also available in this
section.
Parameter Description
Language Selects the language of the interface.
Measurement
system
Sets the system for displaying measurements in the app:
Logging out
To log out of your account:
After logging out, you will see the login screen.
Resetting to the default settings
To reset NVR H to the default settings:
Click the profile icon or user image in the upper-right corner of the
interface.
Select App settings from the dropdown menu.
Metric — measurements are displayed in °C and meters.
Imperial/US customary — measurements are displayed in °F and
feet.
1. Click the profile icon or user image in the upper-right corner of the
interface.
2. Select Sign out.
1. Turn it off by disconnecting the power supply.
2. Press and hold the reset button.
3. Power NVR H while the reset button is pressed, and wait until the LED
indicator lights up violet. This will take about 50 s.
Icons
The icons show some device statuses. You can view them in Ajax apps:
Icon Meaning
The hard drive is connected.
The hard drive is not connected.
The hard drive is being formatted or has periodic malfunctions. If
formatting does not start, replace the hard drive.
The hard drive malfunctions have been detected. Rebooting NVR H or
formatting the hard drive is recommended.
A firmware update is available. Go to the device states or settings to find
the description and launch an update.
Firmware update in progress: downloading/installing the latest version.
New firmware installation has failed.
The NVR H LED indicator lights up yellow for 20 s after powering the video
recorder with a pressed reset button. Then it turns off for 30 s and lights up
violet. This means that NVR H has been restored to the default settings.
4. Release the reset button.
1. Select a in the Ajax app.space
2. Go to the Devices tab.
3. Find NVR H in the list.
The device connection via ONVIF is enabled.
The device has lost connection with the Ajax Cloud server.
States
The States section displays information about the device and its operating
parameters. You can view the video recorder’s states in Ajax apps or on a
display connected via HDMI.
To view states in Ajax apps:
Parameter Meaning
Firmware update The field is displayed when the firmware
update is available:
Learn more
1. Open an and select a .Ajax app space
2. Go to the Devices tab.
3. Select NVR H from the list of devices.
New firmware version available — the
new firmware is available for download
and installation.
Downloading… — firmware downloading
is in progress. It is displayed as a
percentage.
Installing… — the firmware is being
installed.
Failed to update firmware — the new
firmware could not be installed.
Tapping on opens more information
about the device’s firmware update.
Ethernet
NVR H connection status to the Internet via
Ethernet:
Tapping the icon displays the network
parameters.
CPU usage Displayed from 0 to 100%.
RAM usage Displayed from 0 to 100%.
Hard drive
Hard drive connection status to NVR H:
Built-in fan speed Built-in fan speed status:
Connected — NVR H is connected to the
network. Normal state.
Not connected — NVR H is not
connected to the network. Check your
wired internet connection.
OK — the hard drive is communicating
with NVR H. Normal state.
Preset — manual speed control.
Available speed values are:
Formatting required — hard drive
formatting is recommended. If the drive
contains data, it will be permanently
deleted.
Formatting… — the hard drive is being
formatted.
Not installed — the hard drive is not
installed in the NVR H.
OK — the fan is operating normally.
Error — the fan speed issue is detected,
which may lead to overheating or device
malfunction. Check if nothing is blocking
Hard drive temperature The temperature of the hard drive.
Cameras (online / connected)
The number of cameras connected to the
video recorder.
Current archive depth
The depth of hard drive recording. Shows
how many days from the first record.
ONVIF integration
Shows the current status of the device’s
ONVIF integration.
This state is displayed only when ONVIF
integration is enabled.
Uptime NVR H operating time since the last reboot.
Firmware Firmware version of the NVR H.
Device ID
NVR H ID/Serial Number. Also available on
the back part of the casing under the
SmartBracket mounting panel and the
packaging.
Settings
To change video recorder settings in an Ajax app:
Additionally, the Connection and Archive settings can be configured via
HDMI connection.
the blade movement. Contact Ajax
Technical Support if the issue persists.
1. Go to the Devices tab.
2. Select NVR H from the list.
3. Go to Settings by tapping on the gear icon .
4. Set the required parameters.
5. Tap Back to save the new settings.
Settings Meaning
Name
Video recorder name. Appears in the list of
devices, SMS text and notifications in the
events feed.
To change the video recorder name, tap on
the text field.
The name can contain up to 12 Cyrillic
characters or up to 24 Latin characters.
Room
Selection of the NVR H virtual room.
The room name is displayed in the text of
SMS and notifications in the events feed.
Firmware update NVR H firmware version.
Ethernet
The setting of the connection type of NVR H
to Ajax Cloud service via Ethernet.
Available connection types:
Archive
Selection of the maximum archive depth. It
can be set in the range of 1 to 360 days or
can be unlimited.
Allows to format the hard drive.
Local users
Opens the menu for managing local user
accounts on the device.
Local users can access the device even
without an internet connection.
Service Opens a menu with Service settings.
DHCP;
Static.
Learn more
Monitoring
The setting is available in
.
Allows a PRO with rights to configure the
system to set up Zone number for CMS
events — unique identifier of the device in
events it reports to CMS.
For cameras connected to NVR H, the Send
events on detections to CMS option can be
set up additionally. This option defines
whether the camera will send notifications
on motion or object detection to CMS. To do
this, open the settings of the connected
camera and click the Monitoring menu.
Report a problem
Allows to describe a problem and send a
report.
User guide Opens the NVR H user manual.
Delete device Unpairs NVR H from the space.
Service settings
Settings Meaning
Time zone
Time zone selection.
Set by the user and is displayed when
viewing video from IP cameras.
Built-in fan speed The speed of the built-in fan in NVR H.
Setting the fan’s speed helps regulate the
device’s internal temperature.
Learn more
Ajax Pro apps
Available operating modes are:
LED brightness
The brightness level of the LED indicator of
the device is adjusted with a scrollbar.
Connection via ONVIF
Configuring the device’s connection via
ONVIF to third-party VMSs.
Server connection
Delay of cloud connection loss alarm, sec
The delay is required to reduce the risk of a
false event about the lost connection with
the server.
The delay can be set in the range of 30 to
600 seconds.
Cloud polling interval, sec
The frequency of polling the Ajax Cloud
server is set in the range of 30 to 300
seconds.
The shorter the interval, the quicker the
cloud connection loss will be detected.
Get notified of server connection loss
without alarm
If enabled, the app uses a standard
notification sound instead of a siren alert.
Automatic — the fan speed adjusts
automatically based on the device’s
operating conditions to prevent
overheating.
Preset — manual speed control.
Available speed values are:
Low;
Medium;
High.
Learn more
Managing local users
Local users are accounts saved directly on the video recorder that can be
used to access NVR H even without an internet connection. Up to 50 local
users can be created on a single NVR H. Each user has a username,
password, and a role — either Administrator or Operator. The assigned
role determines the local user’s access rights to cameras, the archive, and
device settings.
Local user accounts can be created, managed, and deleted only via
, and only when NVR H is connected to the internet.
Creating a local user
To create a local user in Ajax apps:
Ajax
apps
1. Select a space.
2. Go to the Local users menu in the NVR H settings:
Devices → NVR H → Settings → Local users
3. Tap Add.
4. Fill in the required fields:
1. Enter a Username. Each username must be unique.
2. Enter a Password and confirm it in the Password confirmation
field. The password must be at least six characters long and
include uppercase and lowercase letters, digits, and special
characters.
5. Select the local user role. Note that the Administrator role has full
access to the cameras and settings.
6. If the Operator role is selected, set the required access rights.
7. Tap Save to finish creating a local user.
Editing parameters and permissions
To edit a local user’s name, role, permissions, or password in Ajax apps:
Deleting a local user
To delete a local user in Ajax apps:
1. Select a space.
2. Go to the Local users menu in the NVR H settings:
Devices → NVR H → Settings → Local users
3. Select the required local user.
4. Edit the following parameters as necessary:
1. Username.
2. Role.
3. Access rights (only for the Operator role).
4. Password.
5. Tap Save to apply the changes.
1. Select a space.
2. Go to the Local users menu in the NVR H settings:
Devices → NVR H → Settings → Local users
3. Select the required local user.
4. Tap Delete account.
5. Tap Delete to confirm the action.
Indication
Event Indication Note
NVR H boots after
connecting to power.
Lights up yellow.
If NVR H is connected to
Ajax Cloud, the color
indication changes to white.
NVR H has power and is
connected to the Internet.
Lights up white.
NVR H is not connected to
the Internet or there is no
communication with the
Ajax Cloud server.
Lights up red.
Flashes white or red every
second, depending on the
status of the connection
with the Ajax Cloud server.
The indicator flashes until
one of the following
conditions is met:
Maintenance
The device does not require maintenance.
Technical specifications
Note that once a local user is deleted, they will no longer be able to log in
with their credentials, and all active sessions will be terminated.
NVR H does not have a
hard drive installed.
The hard drive is
installed but does not
work correctly. For
example, when
formatting, if it has
errors, or when it needs
to be formatted.
The hard drive is
formatted/installed.
All cameras added to
NVR H are configured
not to record video to
the NVR’s hard drive.
Technical specifications of NVR HAC (8-ch)
Warranty
Warranty for products of Limited Liability Company “Ajax Systems
Manufacturing” is valid for 2 years after purchase.
If the device does not function correctly, please contact Ajax Technical
Support first. In most cases, technical issues can be resolved remotely.
Contact Technical Support:
Manufactured by “AS Manufacturing” LLC
Technical specifications of NVR HAC (16-ch)
Compliance with standards
Warranty obligations
User Agreement
email
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