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User’s Manual
V1.0.0
P300 Series Displays
ZHEJIANG DAHUA VISION TECHNOLOGY CO., LTD.
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General
This manual introduces the installation, functions and operations of the P300 Series Display
Devices (hereinafter referred to as "the Device"). Read carefully before using the device, and keep the
manual safe for future reference.
Models
This manual applies to Dahua P300 series monitoring models. These include: DHI-LM24-P300, DHILM24-P300A, DHI-LM27-P300, DHI-LM27-P300A, DHI-LM32-P300, DHI-LM32-P300A.
Safety Instructions
The following signal words might appear in the manual.
Signal Words Meaning
User’s Manual
Foreword
TIPS
NOTE
Revision History
Version Revision Content Release Time
V1.0.0 First release. September 2022
DANGER
WARNING
CAUTION
Indicates a high potential hazard which, if not avoided, will result in
death or serious injury.
Indicates a medium or low potential hazard which, if not avoided,
could result in slight or moderate injury.
Indicates a potential risk which, if not avoided, could result in
property damage, data loss, reductions in performance, or
unpredictable results.
Provides methods to help you solve a problem or save time.
Provides additional information as a supplement to the text.
Privacy Protection Notice
As the device user or data controller, you might collect the personal data of others such as their face,
fingerprints, and license plate number. You need to be in compliance with your local privacy protection
laws and regulations to protect the legitimate rights and interests of other people by implementing
measures which include but are not limited: Providing clear and visible identification to inform people
of the existence of the surveillance area and provide required contact information.
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About the Manual
The manual is for reference only. Slight differences might be found between the manual and the
product.
We are not liable for losses incurred due to operating the product in ways that are not in
compliance with the manual.
The manual will be updated according to the latest laws and regulations of related jurisdictions.
For detailed information, see the paper user’s manual, use our CD-ROM, scan the QR code or visit
our official website. The manual is for reference only. Slight differences might be found between
the electronic version and the paper version.
All designs and software are subject to change without prior written notice. Product updates
might result in some differences appearing between the actual product and the manual. Please
contact customer service for the latest program and supplementary documentation.
There might be errors in the print or deviations in the description of the functions, operations and
technical data. If there is any doubt or dispute, we reserve the right of final explanation.
Upgrade the reader software or try other mainstream reader software if the manual (in PDF
format) cannot be opened.
All trademarks, registered trademarks and company names in the manual are properties of their
respective owners.
Please visit our website, contact the supplier or customer service if any problems occur while
using the device.
If there is any uncertainty or controversy, we reserve the right of final explanation.
User’s Manual
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Important Safeguards and Warnings
This section introduces content covering the proper handling of the device, hazard prevention, and
prevention of property damage. Read carefully before using the device, and comply with the
guidelines when using it.
Operation Requirements
WARNING
Do not tread on or squeeze the power line, especially the plug or connection point of the power
line to the product
Please firmly grasp the plug of the connecting line when inserting and removing. Pulling the
connecting line might cause damage to it.
Turn off the power when cleaning the product.
Do not touch any fixed components inside the product. Failure to do so can result in damage to
the product or person.
User’s Manual
Make sure that the power supply of the device works properly before use.
Do not pull out the power cable of the device while it is powered on.
Only use the device within the rated power range.
Transport, use and store the device under allowed humidity and temperature conditions.
Prevent liquids from splashing or dripping on the device. Make sure that there are no objects filled
with liquid on top of the device to avoid liquids flowing into it.
Do not disassemble the device.
Notice and observe all the warnings and illustrations.
Make sure the power is turned off and the connecting lines are removed when moving the
product.
Do not use uncertified connecting lines, which might cause equipment failure.
Avoid collisions with the product. This may cause equipment failure.
Please turn off power for safety if not using the product for a long time.
Installation Requirements
WARNING
Connect the device to the adapter before power on.
Strictly abide by local electrical safety standards, and make sure that the voltage in the area is
steady and conforms to the power requirements of the device.
Do not connect the device to more than one power supply. Otherwise, the device might become
damaged.
Do not hang or lean on the product. Doing so can cause the product to fall or become damaged.
It may also cause injury to people. Pay special attention when children are nearby.
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User’s Manual
If the product is installed on the wall, please make sure the wall's load bearing capacity is
sufficient. To avoid falling and injuring people, install according to the included instructions with
mounting hardware.
Do not put the product in flammable or corrosive gaseous environment, which may cause fire or
damage the product. Placing the product in proximity to flammable gas can easily result in a
dangerous explosion.
Observe all safety procedures and wear required protective equipment provided for your use
while working at heights.
Do not expose the device to direct sunlight or heat sources.
Do not install the device in humid, dusty or smoky places.
Install the device in a well-ventilated place, and do not block the ventilator of the device.
Use the power adapter or case power supply provided by the device manufacturer.
The power supply must conform to the requirements of ES1 in IEC 62368-1 standard and be no
higher than PS2. Note that the power supply requirements are subject to the device label.
Connect class I electrical appliances to a power socket with protective earthing.
Do not block the ventilation opening. Install the product according to this handbook.
Do not place any items on the product. The product may be damaged if foreign objects enter the
internal unit.
Failure to properly secure all screws during installation can result in a fall of the product. Ensure
all mounting hardware and other installation accessories are properly secured during installation.
Mounted height: < 2m.
Protective earthing terminal. The apparatus should be connected to a mains socket outlet
with a protective earthing connection.
~ Alternating Current.
Maintenance Requirements
WARNING
Cut off power and the connecting line immediately and contact the after-sales service center if
the product or the connecting line is damaged for some reason. Continued use without
maintenance might cause smoking or off-odor.
Please turn off power or unplug the power cable immediately if there is smoking, off-odor, or
abnormal noise. Contact the after-sales service center for maintenance after confirming there is
no more smoke or odor. Further use could result in fire.
Do not adjust, maintain or modify if you do not have appropriate qualifications.
Do not open or remove the rear cover, box or cover board of the product. Please contact the
dealer or after-sales service center when in need of adjustment or maintenance.
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User’s Manual
Only qualified service people can maintain. If the product gets any kind of damage, such as
damage to the plug, foreign matter or liquid into the unit, exposure to rain or humidity, loss of
function, or dropped, please contact dealer or after-sales service center.
Be careful during maintenance of product even if the power is off. Some components are
equipped with UPS, and can continue to supply power which is dangerous to people.
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User’s Manual
Table of Contents
Foreword ............................................................................................................................................................ I
Important Safeguards and Warnings ............................................................................................................. III
1 Packing List .................................................................................................................................................... 1
2 Monitor Adjustment ...................................................................................................................................... 4
3 Button Description ........................................................................................................................................ 6
4 Cable Connection .......................................................................................................................................... 8
5 Menu Description .......................................................................................................................................... 9
6 Brightness and Contrast Adjustment ......................................................................................................... 12
7 Operation Menu (OSD) Function Descriptions .......................................................................................... 13
8 Product Specifications ................................................................................................................................ 15
Troubleshooting ......................................................................................................................... 17
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User’s Manual
1 Packing List
The packing list varies depending on the model you purchase. The packing lists in this section are for
reference only. The components that come with the Device might be slightly different from those in
the figures.
Packing list (DHI-LM24-P300/DHI-LM27-P300)
Table 1-1 Packing list description (1)
No. Name
1 Display screen
2 Base/Stand
3 Signal cable
4 Power cord
5 Mount stud
6 Screws
7 Harness seat
8 User's manual
9 Legal and regulatory information
Packing list (DHI-LM24-P300A/DHI-LM27-P300A)
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Table 1-2 Packing list description (2)
No. Name
1 Display screen
2 Base/Stand
3 Signal cable
4 Power cord
5 Mount stud
6 User's manual
7 Legal and regulatory information
Packing list (DHI-LM32-P300)
User’s Manual
Table 1-3 Packing list description (3)
No. Name
1 Display screen
2 Base/Stand
3 Power adapter
4 Signal cable
5 Power cord
6 Mount stud
7 KM 4 × 12 screw bolts
8 CM 4 × 23 screw bolts
9 Base decorative cover
10 User's manual
11 Legal and regulatory information
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Packing list (DHI-LM32-P300A)
Table 1-4 Packing list description (4)
No. Name
1 Display screen
2 Base/Stand
3 Power adapter
4 Signal cable
5 Power cord
6 Mount stud
7 KM 4 × 12 screw bolts
8 CM 4 × 23 screw bolts
9 Base decorative cover
10 User's manual
11 Legal and regulatory information
User’s Manual
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User’s Manual
2 Monitor Adjustment
The adjustment functions of the display screen include tilt angle adjustment, screen vertical
rotation angle adjustment, left and right rotation angle adjustment and height adjustment, as
shown in the following figures.
Different types of displays have different adjustment functions. Some displays have one or
more of the adjustment functions, and some displays are not adjustable. The specific adjustment
function is subject to the function of the actual model display. The four adjustment functions
shown in the following figures are only used to illustrate the adjustment function.
Portrait rotation angle adjustment
Adjust the angle of rotation left and right
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Tilt angle adjustment
Height adjustment
User’s Manual
When adjusting the angle of the monitor, be sure not to touch or press the area of the screen.
The above figures are for reference only, and everything is subject to the actual adjustment
function.
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User’s Manual
3 Button Description
Indicator and buttons (DHI-LM24-P300/DHI-LM24-P300A/DHI-LM27-P300/DHI-LM27-P300A)
Table 3-1 Button description
No. Name Description
1 LED indicator light/Power
button
2 OSD buttons Operate the OSD menu.
A solid white light indicates that the power supply is
normal.
The light is red when the screen enters energy saving
mode.
The light is off when the screen is turned off.
Press the button to turn on the monitor.
Table 3-2 OSD buttons
OSD Button Function
The above content is for reference only, and everything is subject to actual conditions.
Menu button: Press to display OSD menu and enter sub-menus.
Down button: Move down in the menu/Adjust the brightness.
Up button: Move up/Adjust the contrast.
Exit key: Returns to the previous menu/Switch port input signal.
Power button: Press to turn monitor on/off.
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User’s Manual
Indicator and buttons (DHI-LM32-P300/DHI-LM32-P300A)
Table 3-3 Button description
No. Name Description
1 OSD buttons Operate the OSD menu.
2 LED indicator light The blue light indicates that the power supply is normal and the
monitor is running normally.
Flashing blue light indicates no video source, no horizontal or
vertical signals, or too low a voltage.
The light is off when the screen is turned off.
Table 3-4 OSD buttons
OSD Button Function
Menu button: Press to display OSD menu and enter sub-menus.
Down button: Move down in the menu/Adjust the brightness.
Up button: Move up/Adjust the contrast.
Exit key: Returns to the previous menu/Switch port input signal.
Power button: Press to turn monitor on/off.
The above content is for reference only, and everything is subject to actual conditions.
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4 Cable Connection
Input and output ports
Table 4-1 Port description
Port Function
DC Used to connect power adopters.
DP Use the DP cable to connect to a desktop PC.
HDMI
AUDIO OUT
TYPE-C
AC IN Insert the power cable to supply power to the monitor.
Use the HDMI cable to connect the HDMI IN interface of the product to the
HDMI OUT interface of a PC.
Use to connect with external sound output devices such as headphones or
earphones.
Type-C line can be used to connect to data ports of machines. and external
terminals.
User’s Manual
The above ports are for reference only, the actual ports of different types of monitors may be slightly
different from the ports in the figure, and everything is subject to the ports and functions of the
actual product.
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User’s Manual
5 Menu Description
The color and shape of the OSD menu of the actual computer may be slightly different from them
shown in the figure, and everything that has been actually displayed shall prevail.
Specifications of the OSD menu may change with improvements of functions without prior notice.
When booting for the first time, you need to set the default language of the monitor menu. Press
buttons ( or ) to select the language to be set, and press the OK button (M) to confirm.
Language setting window
The on-screen display (OSD) menu can be used to adjust the settings of the monitor and is displayed
on the screen after turning on the monitor and pressing the button.
Press any one of the buttons ( , , , , ) to activate the navigation window.
Navigation window
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Icon Function
User’s Manual
Table 5-1 Icon function
Confirm and enter the main menu.
Adjust the brightness
Adjust the contrast.
Switch port input signal.
Power switch.
Press to enter the OSD screen.
OSD screen
Press or to browse through the functions.
Select the desired function, then press to enter the submenu.
Press or to browse the sub-menus, and then press to confirm the selection
of the desired function.
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User’s Manual
Press or to select an option, then press to confirm the setting and exit the
current menu.
Press to exit the menu interface.
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User’s Manual
6 Brightness and Contrast Adjustment
Press any one of the buttons ( , , , , ) to activate the navigation window.
Navigation window
Press or select to quickly open the Adjust Brightness window and then press the
or button to adjust the brightness that suits you best.
Brightness adjustment window
Press or select
the or button to adjust the contrast that suits you best.
to. quickly open the contrast adjustment window, and then press
Contrast adjustment window
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User’s Manual
Menu
Sub Menu
Value Range
Game
Settings
Standard Mode
Off/On
RTS/RPG Mode
Off/On
FPS Arena Mode
Off/On
MOBA Arena Mode
Off/On
Adaptive
Off/On
Shadow Balance
0
Response Time
Off/Normal/Fast/Ultrafast
Refresh Rate
Off/On/Position: Top Right, Top
Left
Game Crosshair
Off/Crosshair 1/Crosshair 2/Crosshair 3/Crosshair
4/Crosshair 5/Crosshair 6
Game Time
Off/15 minutes/30 minutes/45 minutes/60
minutes/Posi
, Bottom
Left Dynamic
Off/Normal/Expert/Elaboration
Physical Super View
Off/On/Position: Top Right, Top Left, Bottom Right
Left, Center
Picture
Settings
Brightness
0
Contrast
0
DCR Off/On
Contextual model
Off/Movie Mode/Reading Mode/Night
Mode
Low Blue Light
0
Sharpness
0
Gamma
1.8/2.0/2.2/2.4/2.6/S.curve
Aspect Ratio
Wide Screen/4:3/1:1/Auto
Color Settings
Warm
Off/On
Natural
Off/On
Cool
Off/On
User1
Off/On
User2
Off/On
User3
Off/On
Hue R/G/B/C/M/Y
Saturation
R/G/B/C/M/Y
PIP/PBP
PIP/PBP Mode
Off/PIP Mode/PBP 2Win 1:1/PBP 2Win 2:1/PBP 2Win 1:2
Sub
Type
Audio Source
Auto/Type
7 Operation Menu (OSD) Function Descriptions
Functions of the monitor vary with models, and the functions in this manual are for reference only.
Table 7-1 Menu description
-Sync
–100
Left, Bottom Right, Bottom
tion: Top Right, Top Left,Bottom Right
Brightness
-Signal Source
–100
–100
–100
–5
: R, G, B
: R, G, B
: R, G, B
-C/DP/HDMI
-C/DP/HDMI
, Bottom
Mode/Care Eyes
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User’s Manual
PIP Position
Top Right/Top Left/Bottom Right/
PIP Size
Small/Medium/Large
Window Swap
—
O
Language
简体中文
Brasilazil/Deutsch/Nederland/Suomi/Français/Ελληνικά/Ind
onesia/Italiano/
/Malaysia/Polskie/Português/Pусский/Español/
ька/Ti
OSD Time Out
0
OSD H
0
OSD V
0
OSD Transparency
OSD Rotation
Normal/90/180/270
OSD Lock
Off/On
Hotkey1 setting
Brightness
Hotkey2 setting
Contrast
Hotkey3 setting
Input Signal/Mute/Shadow
Crosshair/Refresh Rate/Game Time/
Contextual Model/PIP/PBP/Input Signal/Dynamic
Brightness/Physical Super View
Other
Settings
Input Signal
Auto/Type
Volume
0
Mute
Off/On
Auto power
Off/On
Eyeshield remind
Off/On
Reset
Off/On
Information
Input Source/Resolution/Mode/HDR Ver/SN
SD Settings
-Position
-Position
0–5
Bottom Left
/ENGLISH /한국어/عرﺑﯩ/Portugues do
日本語
ไทย/Українс
ếng Việt/繁體中文/Türkçe
–60
–100
–100
Balance/Game
–100
The OSD features in the table above are for reference only and may differ from the actual display, so
the OSD features of the actual display shall prevail.
-C/DP/HDMI
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8 Product Specifications
Product model
DHI
DHI
DHI
Screen Size
24" 27" 31.5" Aspect Ratio
16:9
16:9
16:9
Viewing Angle
178°(H)/178°(V)
178°(H)/178°(V)
178°(H)/178°(V)
Contrast ratio
1
1
12
Colors
16.7M
16.7M
16.7M
Resolution
256
256
256
Maximum refresh rate
75 Hz
75 Hz
75 Hz
Product
Dimensions
Lifting base
Without base
539.6
61.0
mm
613.3
mm
718.6
With base
539.6
1
613.3
mm
718.6
mm
Speaker
No No No Height range
No No No Rotation angle
No No No Vertical angle
No No No
Tilting angle
Forward tilting
Environmental
conditions
Action
Temperature: 0 °C to 40°C (32°F to 104°F)
Humidity: 10%
Storage
Temperature:
Humidity: 5%
Product model
DHI
DHI
DHI
Screen Size
24" 27" 31.5" Aspect Ratio
16:9
16:9
16:9
Viewing Angle
178°(H)/178°(V)
178°(H)/178°(V)
178°(H)/178°(V)
Contrast ratio
1
1
12
Colors
16.7M
16.7M
16.7M
Resolution
256
256
256
Maximum refresh rate
75 Hz
75 Hz
75 Hz
Product
Dimensions
Lifting base
Without base
539.6
61.0
mm
613.3
mm
718.6
With base
539.6
1
613.3
mm
718.6
mm
Speaker
No No No
Table 8-1 Product specifications (1)
-LM24-P300
-LM27-P300
User’s Manual
-LM32-P300
000:1 (TYP)
0 × 1440
× 324.5 ×
× 419.8 ×
99.3 mm
000:1 (TYP)
0 × 1440
× 367.3 × 64.9
× 499.6 × 199.3
00:1 (TYP)
0 × 1440
× 422.1 × 47.4 mm
× 519.2 × 236.1
: 5° ± 2°; Backward tilting: 20° ± 2°
–90% RH (non-condensing)
–20 °C to +60°C (-4 °F to +140 °F)
–95% RH (non-condensing)
The above parameters are for reference only, and the parameters of the actual model shall prevail.
Table 8-2 Product specifications (2)
-LM24-P300A
000:1 (TYP)
000:1 (TYP)
0 × 1440
× 324.5 ×
× 513.6 ×
49.3 mm
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-LM27-P300A
0 × 1440
× 367.3 × 64.9
× 543.4 × 194.3
-LM32-P300A
00:1 (TYP)
0 × 1440
× 422.1 × 47.4 mm
× 602.0 × 256.1
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User’s Manual
Height range
125 mm (± 5 mm)
125 mm (± 5 mm)
125 mm (± 5 mm)
Rotation angle
–
+
–
+
–
+
Vertical angle
–
+
–
+
–
+
Tilting angle
Forward tilting
Environmental
conditions
Action
Temperature: 0 °C to 40°C (32°F to 104°F)
Humidity: 10%
Storage
Temperature:
Humidity: 5%
45 °C (±2.0 °C) to
45 °C (±2.0 °C)
90 °C (±2.0 °C) to
90 °C (±2.0 °C)
The above parameters are for reference only, and the parameters of the actual model shall prevail.
45 °C (±2.0 °C) to
45 °C (±2.0 °C)
90 °C (±2.0 °C) to
90 °C (±2.0 °C)
45 °C (±2.0 °C) to
45 °C (±2.0 °C)
90 °C (±2.0 °C) to
90 °C (±2.0 °C)
: 5° ± 2°; Backward tilting: 20° ± 2°
–90% RH (non-condensing)
–20 °C to +60°C (-4 °F to +140 °F)
–95% RH (non-condensing)
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Troubleshooting
Screen color error under VGA
Appendix Table 1-1 FAQ
Faults Occurring Possible Solutions
The power indicator light is not on
Plug and play failed
Check if the power is on.
Check if the power cord is connected.
Check if the function of plug-and-play of the device
is compatible with PC.
Check if the display card is compatible with the plugand-play function.
User’s Manual
Dimming picture
Flickering picture or picture with
ripples
The power indicator light
is on (flickering), but the
monitor has no pictures.
Color shortage (red, green and
blue)
The picture is not in the middle, or
the size is not right
Picture with color difference (white
looks not white)
Adjust brightness and contrast.
There may be electrical appliances or equipment with
electronic disturbance.
Check if the PC power is on.
Check if the PC display card is inserted properly.
Check if the signal cable of the monitor is correctly
connected with the PC.
Check the signal cable plug of the monitor and make
sure every pin has no bending.
Observe the indicator light by pressing the Caps
Lock key on the PC keyboard and check if the PC is
working.
Check the signal cable of the monitor and make sure
every pin has no bending.
Hot key(AUTO)
Adjust RGB color or reselect color temperature.
Screen font blur under VGA signal
signal
The above solutions are for reference only. If you have any problems, please contact the after-sales
service center or find a professional to help.
Select
Select
E
to automatically adjust the image.
Auto color
output screen.
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in OSD to correct under the white
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User’s Manual
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