Overview
The Dahua DHI-LM27-B221 is a 27-inch Full HD IPS monitor with a manufacturer-listed maximum refresh rate of 144Hz. It is part of Dahua’s commercial monitor range and is also presented by Bangladesh retailers as a gaming display. Its exact model code ends in B221 and does not include the extra B found on DHI-LM27-B221B. That suffix matters: Dahua publishes different dimensions, VESA patterns, weight, tilt range and power specifications for the two models. This page uses the official DHI-LM27-B221 sheet as its technical source and leaves live BiponiBD offer details to the current seller listing.
Display size and resolution
Dahua specifies a 27-inch screen with a 16:9 ratio and 1920 × 1080 native resolution. Full HD is widely supported by desktop graphics cards, laptops and consoles and can make it easier to reach high frame rates than a higher-resolution mode. At 27 inches, however, Full HD has lower pixel density than QHD at the same diagonal. Fine text and detailed images may therefore look less crisp at close viewing distance. Consider desk depth, viewing distance, vision and the type of work before deciding whether this resolution suits the workspace.
IPS panel and viewing angle
The exact Dahua datasheet identifies an IPS panel with 178° horizontal and vertical viewing angles. IPS technology is commonly selected for wide-angle viewing and relatively consistent color when the viewer shifts position. The viewing-angle specification describes a usable viewing range; it does not promise perfectly unchanged brightness, contrast or color at every angle. The panel uses an LED backlight. Dahua describes a light plastic housing and an ultra-narrow bezel, while the supplied images show the front and angled view. The exact chassis and panel measurements should be taken from the B221 datasheet, not from the separate B221B revision.
144Hz refresh rate
Dahua lists 144Hz as the maximum refresh rate. A display running at 144Hz can refresh more often than a 60Hz display, which can make motion and pointer movement appear smoother when the source device provides compatible frames. Actual results depend on the computer or console, selected video timing, input connection, cable and settings. The manufacturer sheet lists HDMI and DisplayPort inputs but does not specify their interface versions or maximum timing per port. Set the refresh rate in the device’s display configuration and confirm the available mode rather than assuming every connection automatically selects 144Hz.
1ms MPRT response rating
The manufacturer specifies a 1ms MPRT response time. MPRT describes motion-picture response behavior; it is a different metric from gray-to-gray pixel transition time. The 1ms figure does not describe end-to-end input lag and does not mean every pixel changes state in exactly one millisecond. Motion clarity also depends on refresh rate, frame rate, game content, overdrive settings and viewing conditions. Avoid comparing this MPRT value directly with a competitor’s GTG claim unless the measurement methods and modes match.
Brightness, contrast and color
The official DHI-LM27-B221 sheet gives maximum brightness of 300 nits, a 1500:1 contrast ratio and 16.7 million display colors at 8-bit. Some Bangladesh retail summaries call 300 nits typical; Dahua labels it maximum in the official data, so the product attributes use that wording. Perceived brightness and black level vary with picture settings, ambient light and panel condition. The datasheet does not publish a color-gamut percentage or factory-calibration result. Buyers doing color-critical photography, video or print should seek independent measurement data instead of inferring a professional color workflow from an IPS label.
Inputs and audio output
Dahua lists one HDMI input, one DisplayPort input and one audio-out output. The exact manufacturer sheet does not state the interface versions, so the updated specification avoids assigning HDMI 2.0 or DisplayPort 1.4 without model-specific evidence. The monitor has no built-in speaker. Audio can be routed to external equipment through a compatible source and audio-out connection. Confirm cable compatibility and the source device’s sound configuration. If the interface version or supported timing is essential, ask the seller to verify the physical unit or its user documentation.
Low-blue-light feature
Dahua lists an anti-blue-light design and hardware-based low-blue-light support. Such display functions can change the image to make it more comfortable for some users, but they are not a medical guarantee and do not prevent eye fatigue. Color appearance can shift when a low-blue-light mode is enabled. Users who edit color-sensitive content may prefer to switch profiles for that work. Glare, room brightness, font size, viewing distance and regular breaks also affect comfort during long sessions.
Stand, tilt and VESA mounting
The official datasheet lists a tilt range from −5° ± 2° to +15° ± 2°. Height range, swivel and pivot are marked unavailable. It also specifies a 75 × 75 mm VESA pattern. These measurements differ from the DHI-LM27-B221B model, which uses a 100 × 100 mm mount and a different tilt range. Check the exact model label before buying an arm or bracket. Confirm screw type, mounting clearance and the arm’s weight rating, and install the monitor according to the product instructions.
Dimensions, net weight and carton
Dahua gives bare monitor dimensions of 614.1 × 363 × 51.1 mm (width × height × depth) without the base. Net weight is 3.84 kg, while gross packaged weight is 5.29 kg. The carton dimensions are 694 × 114 × 458 mm (width × depth × height). Keeping these measures separate helps distinguish desk or arm load from courier weight and carton volume. The catalog variant logistics fields now use the manufacturer’s gross package weight and carton size for shipping calculations; the product weight attribute separately reports net and gross values.
Power and adapter
The DHI-LM27-B221 uses an external 12V DC, 3A power adapter. Dahua lists standard power consumption of no more than 36W and standby consumption of no more than 0.5W. The manufacturer sheet does not state the adapter’s AC input range; check the actual adapter label for local mains compatibility. Do not substitute an adapter based solely on the output voltage. Match voltage, current capacity, polarity and connector requirements with the supplied unit or official service guidance.
Accessories and warranty
Dahua lists an HDMI cable, adapter and base as standard accessories. That is the manufacturer’s standard package reference, not proof that a particular BiponiBD shipment contains every item or the same regional cable. Bangladesh retailer listings show a three-year warranty reference. The responsible distributor, coverage start, service location, serial eligibility, dead-pixel policy and claim documents are offer-specific. Confirm those terms with the seller and retain the invoice. The static description does not promise a particular seller warranty.
Product images and exact suffix
The two supplied images were visually inspected. They show a black Dahua monitor from the front and at an angled front view, including the stand and screen border. They do not show the rear ports, serial label, carton or included accessories. Product photos cannot verify stock, warranty or the physical unit suffix. The existing product slug remains unchanged so links continue to point to the same catalog record. Verify DHI-LM27-B221 on the carton or rear label; do not confuse it with DHI-LM27-B221B or another Dahua 27-inch monitor.
Who may choose it
This monitor may suit a user who wants a 27-inch Full HD IPS screen, a manufacturer-listed 144Hz maximum refresh rate, VESA mounting and standard HDMI/DisplayPort connectivity. It may be less suitable for someone seeking QHD text density, a height-adjustable stand, built-in speakers, a 100 × 100 mm VESA arm interface or HDMI/DP version guarantees. Check the graphics device and connection before relying on 144Hz. Compare the exact B221 model label, seller offer, package and warranty terms before ordering.
Specification summary
Features
- 27-inch LED-backlit IPS panel with 1920 × 1080 Full HD resolution and a 16:9 aspect ratio.
- Maximum refresh rate of 144Hz, as stated in the exact Dahua DHI-LM27-B221 datasheet.
- Manufacturer-rated 1ms MPRT response time; MPRT is not a gray-to-gray value or a measure of input lag.
- Dahua lists 300 nits maximum brightness, a 1500:1 contrast ratio and 16.7 million 8-bit colors.
- 178° horizontal and vertical viewing angles are specified for the IPS panel.
- One HDMI input and one DisplayPort input are specified; the Dahua sheet does not state their interface versions.
- One audio-out port is listed; Dahua states that the monitor has no built-in speaker.
- Hardware-based low-blue-light feature is included in the official feature list.
- The stand supports tilt from −5° ± 2° to +15° ± 2°; no height, swivel or pivot range is listed.
- 75 × 75 mm VESA mounting, an external 12V/3A adapter and manufacturer-listed power values support installation planning.
- Official dimensions distinguish the monitor without base from the packaged carton; official net and gross weights are separately specified.
- The Dahua sheet lists HDMI cable, adapter and base as standard accessories; actual BiponiBD carton contents must still be confirmed.
Advantages
- The official manufacturer datasheet is available for this exact non-B model, making its core technical specifications verifiable.
- A 144Hz Full HD IPS panel combines wide listed viewing angles with a high refresh option for compatible sources.
- One HDMI input, one DisplayPort input and audio out support common desktop connections.
- The manufacturer specifies both net and packaged weight, carton size, VESA pattern and power adapter requirements.
- Hardware-based low-blue-light support and a 75 × 75 mm VESA mount are explicitly listed.
Points to consider
- Full HD across 27 inches has lower pixel density than QHD at the same size, so fine text can appear less sharp at close distance.
- The stand is tilt-only; height, swivel and pivot adjustments are not specified.
- No built-in speakers are included; external audio equipment is required.
- The official document does not specify HDMI or DisplayPort interface versions or per-port maximum timing details.
- The official carton is 5.29 kg gross, noticeably heavier than the 3.84 kg bare monitor; use packaged figures for shipping calculations.
- Warranty provider, exact seller terms and live BiponiBD price/stock are not identified by the manufacturer datasheet.
Frequently asked questions
What is the exact model?
The exact product is Dahua DHI-LM27-B221, without a trailing B. Do not substitute specifications from DHI-LM27-B221B; Dahua publishes separate technical sheets for the two models.
What resolution and refresh rate does it support?
Dahua lists 1920 × 1080 Full HD and a maximum refresh rate of 144Hz. A computer must output a supported timing and the display settings must be configured for the desired refresh rate.
What panel does it use?
The manufacturer identifies a 27-inch IPS panel with LED backlight, 16:9 aspect ratio and 178° horizontal/vertical viewing angles.
What does its 1ms response figure mean?
Dahua specifies 1ms MPRT. MPRT is a motion-picture response measure; it is not the same as GTG response time, input lag or a guarantee that every pixel transition takes one millisecond.
What are its brightness and contrast values?
The DHI-LM27-B221 datasheet specifies 300 nits maximum brightness and a 1500:1 contrast ratio. A local retailer may label brightness as typical, but the manufacturer sheet says maximum.
Which ports are included?
Dahua lists one HDMI input, one DisplayPort input and one audio-out port. The official sheet does not specify the HDMI or DisplayPort version. The monitor does not have built-in speakers.
Does it have built-in speakers?
No. Dahua lists the speaker field as NA and specifies one audio-out output. Connect external speakers or headphones through a compatible audio path.
Can it mount on a monitor arm?
The manufacturer lists 75 × 75 mm VESA mounting. Check that the arm uses the same pattern, suitable screws and a load rating compatible with the display.
How does the stand adjust?
Dahua lists tilt from −5° ± 2° to +15° ± 2°. Height adjustment, swivel and pivot are marked unavailable in the manufacturer specifications.
What are its dimensions and weight?
Without the base, the monitor measures 614.1 × 363 × 51.1 mm (W × H × D). The exact datasheet lists 3.84kg net weight and 5.29kg gross package weight. The package measures 694 × 114 × 458 mm (W × D × H).
What power adapter does it need?
The manufacturer lists an external 12V DC, 3A adapter, standard consumption up to 36W and standby consumption up to 0.5W. Confirm the supplied adapter label and local power cord before use.
What is in the box and what warranty applies?
Dahua lists an HDMI cable, adapter and base as standard accessories. Local retailer pages show a three-year warranty reference, but the exact BiponiBD seller/provider and carton contents require confirmation for the specific offer.
Technical specifications are based on the Dahua DHI-LM27-B221 manufacturer datasheet. Price, BiponiBD stock, seller warranty terms and exact shipment contents must be confirmed for the specific offer.
