Model identity and listing scope
This listing is for the Dahua DHI-LM27-B221B, a 27-inch Full HD commercial monitor from Dahua. Retail pages sometimes shorten the model to LM27-B221B, while the manufacturer datasheet prints DHI-LM27-B221B. The suffix matters: similarly named B221 variants can have different stands, dimensions, power requirements and VESA patterns. The specifications in this description follow the Dahua sheet for the B221B variant.
Screen size and viewing area
The display measures 27 inches diagonally, with a 16:9 widescreen format. Dahua lists an active viewing area of 597. 888 × 336. 312 mm. This size gives room for full-size documents, browser windows and common video layouts without changing the familiar widescreen shape. A large panel also needs enough desk depth and a comfortable viewing distance.
Full HD resolution and pixel density
The native resolution is 1920 × 1080 pixels. The manufacturer lists a 0. 3114 mm pixel pitch and 81. 6 pixels per inch, which is consistent with Full HD spread over a 27-inch diagonal. This resolution is widely supported by desktop computers and is less demanding to render than QHD or 4K.
IPS panel and viewing angles
Dahua specifies an IPS LCD panel with horizontal and vertical viewing angles of 178 degrees. IPS technology is designed to keep the image usable when viewed from off-center positions, which can help when sharing the screen or arranging two displays side by side. The viewing-angle rating does not mean brightness and color remain perfectly unchanged at every angle.
144Hz refresh and compatible setup
The maximum listed refresh rate is 144Hz. A higher refresh rate can make cursor movement, scrolling and compatible games look smoother than on a conventional 60Hz display. To use 144Hz, the computer graphics output, cable, input and selected resolution must all support the mode. After connecting, select 1920 × 1080 and 144Hz in the operating system or graphics control panel.
Understanding the MPRT response figure
Dahua rates the response as 1ms MPRT. MPRT is a motion-picture response metric and differs from gray-to-gray pixel-transition testing. Retail pages sometimes simplify the number to “1ms,” but that shortened wording can cause misleading comparisons with GTG results. The number does not establish input lag, motion clarity in every mode or the behavior of every transition.
Brightness, contrast and color
The manufacturer sheet specifies 300 cd/m² typical brightness, a 1300:1 typical contrast ratio, 16. 7 million colors and 85% NTSC typical color gamut. These figures help compare displays for general office work, streaming and everyday image viewing. They are not a promise that an individual panel is factory calibrated to a professional tolerance, nor do they provide a measured uniformity report.
Surface treatment and backlight
The datasheet identifies an ELED backlight and a surface treatment described as Haze 25%, 3H. The haze value relates to the screen surface treatment, while 3H describes a stated hardness rating; neither is a guarantee against scratches or rough handling. Avoid pressing on the panel or using abrasive cleaners. Turn the display off before cleaning, use a soft lint-free cloth, and follow Dahua’s care instructions.
Video inputs and the HDMI specification correction
The official Dahua sheet lists one DisplayPort 1. 4 input and one HDMI 2. 0 input. It explicitly states that both inputs support 1920 × 1080 at 144Hz. A reseller’s short summary showed HDMI 2. 1, but the manufacturer specification and detailed exact-model tables identify HDMI 2. 0; this listing therefore uses HDMI 2. 0.
Audio output and speaker expectations
The datasheet lists one audio-out port but does not list integrated speakers. This means the monitor should not be treated as a complete speaker system. If you want sound through external headphones or speakers, confirm the audio routing and cable type for your source device and the monitor. The audio-out port does not add another video input and should not be confused with a microphone jack.
Stand movement and ergonomics
The included stand is documented with tilt adjustment from about −5° ± 2° to +20° ± 2°. The product data does not list height adjustment, swivel or portrait rotation. Set the panel so that the top edge and viewing angle suit your posture, and use a compatible VESA arm if you need more movement.
VESA mounting and installation
Dahua lists a 100 × 100 mm VESA mounting pattern, which is common for monitor arms and wall brackets. Confirm that the bracket supports the monitor’s load and that its screws have the correct thread and length. An excessively long screw can damage the display, so do not substitute hardware without checking the manual.
Dimensions and desk planning
The official product dimensions are 614. 3 × 366. 8 × 57. 2 mm in width, height and depth, described as without the wall-mount bracket. Dahua separately lists a package size of 695 × 460 × 150 mm. The monitor footprint on a desk also depends on the stand base, which is not represented by the bare panel-depth figure.
Net weight and packaged weight
The official sheet distinguishes 3. 7 kg net weight from 4. 95 kg gross weight. The gross figure is the packaged shipping weight, not the bare monitor weight. This distinction matters when planning an arm mount, lifting the screen or estimating delivery weight. The variant’s logistics fields now use the manufacturer’s package measurements and gross weight, while the public specification explains both net and gross values.
Power adapter and consumption
The monitor uses an external power adapter, with a specified supply of 12 V DC at 2. 5 A. Dahua lists power consumption as 21 W basic, 25 W typical and 35 W maximum, with less than 0. 5 W standby consumption. Use the adapter supplied for the exact unit and confirm its output label before connecting it.
Low-blue-light comfort feature
Dahua describes low-blue-light technology as a comfort feature. The public datasheet does not name a TÜV Rheinland certification for this exact model, so this page does not claim one. Eye-comfort features can be helpful for some users, but they do not remove the need for breaks, suitable room lighting and a comfortable viewing position.
Using the display for gaming
A 144Hz refresh specification can suit casual and competitive games when the computer can render enough frames and the chosen input supports the desired mode. Full HD is less demanding for a graphics card than higher resolutions, which may help maintain frame rates. The 1ms MPRT figure should not be interpreted as a complete measure of response behavior or input lag.
Office, study and commercial use
The 27-inch 16:9 panel can provide a broad workspace for documents, spreadsheets, browser tabs and video calls. IPS viewing angles can be convenient when a colleague or classmate needs to see the screen. Full HD is compatible with many systems and can keep interface elements comfortably sized without scaling. The tilt-only stand may require an arm or riser for a particular desk height.
Color-sensitive creative work
Dahua lists 85% NTSC typical color gamut, 300 cd/m² typical brightness and 16. 7 million colors. Those manufacturer figures provide a useful baseline but do not substitute for measured coverage in sRGB, DCI-P3 or Adobe RGB, a calibration report or panel-uniformity measurements. For professional print, grading or color-critical design, compare a monitor with published instrument testing and a suitable calibration workflow.
Manufacturer-listed accessories
Dahua’s product sheet lists a power adapter, base, HDMI cable, user manual by QR code and legal/regulatory information, among other accessories. This is manufacturer documentation for the model family and not a confirmation of the carton currently held by a BiponiBD merchant. Regional bundles, seller substitutions or packaging revisions can differ.
Warranty and after-sales terms
The catalog record and several Bangladesh listings show a three-year warranty reference for this model. Warranty coverage is specific to the merchant offer and may depend on the serial number, invoice, carton, service center and claim rules. The manufacturer datasheet describes the product and certifications but does not define the warranty terms for a particular BiponiBD order.
Catalog price and availability
The saved catalog variant MSRP is BDT 15,200. Bangladesh retailer pages showed differing market prices during this review, including a BDT 14,999 observation and a BDT 16,820 regular-price listing. These are competitor observations, can change without notice and are not BiponiBD offers. The catalog value also does not prove physical stock or checkout availability.
Reading the product images
The three supplied images were visually inspected. They show a black Dahua-branded monitor from the front, an angled front view and the rear chassis with its stand. The images support visible design observations such as the black casing and pedestal. They cannot prove the refresh rate, panel gamut, warranty, exact included cable or stock status.
Specifications and source hierarchy
This description prioritizes the Dahua DHI-LM27-B221B manufacturer datasheet for technical specifications. Exact-model Bangladesh retailer pages were used as secondary checks for product naming, local warranty wording and observed pricing. The detailed port entry in the manufacturer sheet says HDMI 2. 0, despite a short reseller summary that says HDMI 2. 1, so the manufacturer specification is used. Net and gross weights are kept separate.
Who should consider this monitor
This model may suit someone who wants a large Full HD IPS screen with a 144Hz refresh rating, common HDMI and DisplayPort inputs, VESA mounting and a three-year warranty reference in the catalog. It may be less suitable for a buyer who prioritizes QHD text density, height-adjustable ergonomics, USB-C docking, built-in speakers or a measured creator-grade color workflow. Compare those needs before choosing.
Specification summary
Key features
- 27-inch flat IPS panel with 1920 × 1080 Full HD resolution and a 16:9 aspect ratio.
- 144Hz refresh rate for smoother motion when the computer and selected input are configured for 144Hz.
- Manufacturer-rated 1ms MPRT response specification; MPRT is a motion-response measure, not a GTG figure.
- 300 cd/m² typical brightness, 1300:1 typical contrast and 16.7 million colors in the official product sheet.
- 85% NTSC typical color gamut and 178° horizontal/vertical viewing angles.
- One DisplayPort 1.4 and one HDMI 2.0 input; both are listed for 1920 × 1080 at 144Hz.
- One audio-out port for connecting external audio equipment; built-in speakers are not listed.
- Tilt adjustment, 100 × 100 mm VESA mounting, external adapter and ELED backlight.
Advantages
- A 144Hz Full HD IPS panel combines a large screen with a high listed refresh rate and wide viewing angles.
- Both DP 1.4 and HDMI 2.0 are specified for 1920 × 1080 at 144Hz in the manufacturer sheet.
- The official sheet clearly lists 300 cd/m² typical brightness, 1300:1 contrast and 85% NTSC typical gamut.
- A 100 × 100 mm VESA pattern provides an alternative to the included tilt-only stand.
- An audio-out port is available for external headphones or speakers, and the official specification lists an HDMI cable among accessories.
Points to consider
- Full HD across 27 inches has lower pixel density than a 27-inch QHD display, which can make fine text look softer at close range.
- The stand is listed for tilt only; height, swivel and pivot adjustment are not listed.
- No built-in speakers, USB-C, USB hub or additional video input is specified.
- The 1ms figure is MPRT; it should not be compared directly with GTG response values without matching test methods.
- The official sheet lists a 300 cd/m² typical brightness and 85% NTSC gamut; buyers needing higher brightness or a wider measured color space should compare alternatives.
Frequently asked questions
What is the exact model number?
The manufacturer model is DHI-LM27-B221B, also written LM27-B221B in some retail titles. This audit uses DHI-LM27-B221B as the exact model identifier.
What are the screen size and resolution?
The manufacturer datasheet specifies a 27-inch IPS display with 1920 × 1080 Full HD resolution and a 16:9 aspect ratio.
Does this Dahua monitor support 144Hz?
Yes. Dahua specifies a 144Hz refresh rate. The datasheet lists both DisplayPort 1.4 and HDMI 2.0 inputs for 1920 × 1080 at 144Hz. The graphics output, cable and operating-system display mode must also support the selected refresh rate.
Is its response time 1ms?
Dahua lists 1ms MPRT. MPRT describes motion-picture response behavior and is not the same measurement as a gray-to-gray response time. It does not by itself state input lag or guarantee every pixel transition takes one millisecond.
Which video ports does it have?
The official datasheet lists one DisplayPort 1.4 input and one HDMI 2.0 input. Both support 1920 × 1080 at 144Hz according to that sheet. It also lists one audio-out port.
Does it have built-in speakers?
Built-in speakers are not listed in the manufacturer datasheet or the reviewed exact-model local specifications. The monitor does have an audio-out port for external audio equipment.
Can I mount it on an arm?
The manufacturer lists a 100 × 100 mm VESA mounting pattern. Check that the arm supports this pattern, the monitor weight and the screw requirements before installation.
Can the stand adjust height?
The documented stand adjustment is tilt, from approximately −5° ± 2° to +20° ± 2°. Height, swivel and pivot adjustment are not listed. A compatible VESA arm may provide additional movement.
How sharp is Full HD on a 27-inch screen?
The datasheet gives a pixel pitch of 0.3114 mm and density of 81.6 pixels per inch. Full HD can be comfortable at a suitable viewing distance, but it is less dense than QHD at the same screen size.
What brightness and color gamut are specified?
Dahua lists 300 cd/m² typical brightness, 1300:1 contrast, 16.7 million colors and 85% NTSC typical gamut. These are manufacturer specifications and do not establish the calibration or uniformity of an individual unit.
What comes in the manufacturer-listed package?
The datasheet lists a power adapter, base, HDMI cable, user manual by QR code and legal/regulatory information, among other items. The exact contents of a BiponiBD seller’s box should be confirmed with that offer.
What warranty and current price apply on BiponiBD?
The catalog records a three-year warranty reference and a BDT 15,200 variant MSRP. Neither value proves the terms or payable price for a particular live merchant offer. Confirm the warranty provider, serial eligibility, final price and availability on the specific BiponiBD offer before ordering.
Specifications were checked against the exact Dahua DHI-LM27-B221B manufacturer datasheet. Offer-specific price, availability, warranty and package contents must be confirmed with the seller.
