Dahua DHI-LM22-A220 21.45-inch 144Hz FHD VA Monitor

Dahua DHI-LM22-A220 21.45-inch Full HD Monitor

Exact model and source basis

This listing covers Dahua DHI-LM22-A220, also marketed as LM22-A220, a 21.45-inch flat VA monitor. Dahua’s exact-model product page and its April 20, 2026 datasheet are the primary technical references. Local seller tables are useful as secondary comparisons, but they do not measure the BiponiBD unit. The manufacturer documentation resolves several differences in the saved catalog and retailer tables: VESA is 75 × 75mm, depth without the base is 43.5mm, and power is 12W basic, 15W typical and 18W maximum. Some Bangladesh retailer entries instead show 41.2mm and up to 24W. Where sources differ, this description identifies the Dahua specification and the competing retailer value rather than blending them. Match DHI-LM22-A220 on the carton and rear label; nearby LM22 variants use different panels, refresh rates and features.

Screen size, shape and native detail

The active screen diagonal is 21.45 inches, in a 16:9 format, with native resolution of 1920 × 1080 pixels. Dahua specifies a VA LCD panel with ELED backlighting. Its stated viewing area is 478.656 × 260.28mm and pixel density is 102.69 pixels per inch. This provides the familiar widescreen layout for documents, browser tabs, video and compatible games. The monitor is flat, not curved. Listings sometimes round the size to 21.5 or 22 inches; check the stated active diagonal and outside dimensions if a desk shelf or enclosure has tight clearance.

Refresh rate: 120Hz native and 144Hz overclocked

Dahua lists 120Hz with overclocking up to 144Hz. These are different operating modes: 120Hz is the stated native rate and 144Hz is the overclocked maximum, not a guarantee for every cable, computer or application. The official port specification says HDMI 1.4 can carry 1920 × 1080 at up to 144Hz, while VGA is limited to 1920 × 1080 at 60Hz. A compatible graphics output and display setting are also required. Retail headlines often shorten this to 144Hz; the native/overclocked distinction and input-specific limit matter when comparing displays.

Response, contrast and color

The Dahua exact-model page specifies 1ms MPRT response time. Some retailer pages also list 5ms OD or both values; the reviewed Dahua page and datasheet establish 1ms MPRT, not a same-method 1ms versus 5ms measurement. MPRT and overdrive response are different labels, so do not replace one with the other or promise a gray-to-gray result without a matching source. Dahua states 4000:1 typical contrast, 250 cd/m² typical brightness, 8-bit color and 72% NTSC typical gamut. These are manufacturer specifications, not independent calibration results for the physical BiponiBD unit. No HDR, professional color certification or measured color accuracy is claimed.

Viewing comfort and surface

The manufacturer specifies a 178° horizontal and 178° vertical viewing angle, AG25% surface treatment, flicker-free technology and Low Blue Light. These are design claims from Dahua; they do not establish TÜV certification or guarantee that every user will avoid eye fatigue. Ambient lighting, viewing distance and brightness setting affect comfort. Position the display for the primary viewer, reduce reflections and take breaks during long sessions. The panel is flat and does not have touch input listed. Treat the manufacturer terms as product features, not as a substitute for an ergonomic setup.

Inputs and audio

There is one HDMI 1.4 input and one VGA input. Dahua states HDMI support up to 1920 × 1080 at 144Hz and VGA up to 1920 × 1080 at 60Hz. The official page does not list DisplayPort, DVI, USB, audio output or built-in speakers; plan for an external audio device if sound is needed. HDMI can support the highest listed mode when the source and settings are compatible. VGA is an analog connection with a lower listed refresh limit. Confirm the ports and graphics output on the actual setup before purchase.

Stand, tilt and mounting

Dahua specifies tilt from −5° ± 2° to +15° ± 2° and a 75 × 75mm VESA mounting pattern. A wall or arm bracket is not listed among the standard contents; verify the bracket pattern, screw requirements and weight rating before installation. Some retailer specification tables omit or conflict about the VESA value, so the exact-model Dahua V1 page is the primary reference. The stand is tilt-adjustable; the manufacturer page does not list height adjustment, swivel or pivot. Check the actual stand and mounting holes if those details are essential.

Dimensions and weight

Without its base, Dahua lists 492.7 × 284 × 43.5mm (width × height × depth). Package dimensions are 598 × 366 × 99mm. Net weight is 1.85kg and gross package weight is 2.93kg. A retailer table lists 41.2mm depth, which differs from Dahua’s 43.5mm; check the delivered revision if the monitor must fit a shallow enclosure. The product depth and height exclude the base, so reserve additional desk space for the assembled monitor. Active screen diagonal is not the same as casing width.

Power and operating environment

The monitor uses an external 12V DC, 2A adapter. Dahua lists 12W basic, 15W typical, 18W maximum and below 0.5W in standby. Some retailer tables state up to 24W; Dahua’s V1 sheet is more specific, and both values are recorded as a source conflict in the catalog evidence. Use the supplied adapter and check voltage, current and polarity from its label; a connector that fits is not enough. Dahua lists operation from 0°C to +40°C and 10%–85% relative humidity, non-condensing. Keep ventilation clear and protect the monitor and adapter from moisture.

Box contents and warranty

Dahua lists a power adapter, base, HDMI cable, QR-code user manual, quick-start guide and regulatory/energy documents among standard accessories. Confirm the actual package contents when the monitor arrives; a public source cannot prove what is in a specific BiponiBD box. The BiponiBD catalog currently carries a three-year warranty statement, and local sellers advertise three years for their own sales. The manufacturer datasheet does not identify the warranty provider or establish coverage for BiponiBD’s unit. Ask BiponiBD to confirm provider, exclusions, adapter terms, claim location and invoice/serial requirements.

Good fit and trade-offs

The 21.45-inch Full HD panel, HDMI and VGA, and refresh modes up to 144Hz can suit a compact desk and compatible computer. The VA panel has Dahua’s stated 4000:1 typical contrast. Understand 120Hz native separately from the overclocked 144Hz mode and 1ms MPRT separately from retailer OD figures. Dahua does not list adaptive sync, HDR, speakers or DisplayPort for this model. Buyers who need more pixels, USB-C docking, integrated audio, a height-adjustable stand or guaranteed adaptive sync should compare a model that documents those features. No measured latency or panel uniformity claim is made.

Offer and purchase checks

The saved BiponiBD variant price is BDT 8,800 and its status is Active. Those catalog fields do not prove physical stock, checkout total, delivery coverage or current market-low status. Independent Bangladesh sellers publish different prices and availability, and those offers can change. Confirm BiponiBD’s current amount and stock before ordering. Check the model code, graphics output, desired refresh mode, adapter, included HDMI cable, VESA pattern and desk clearance. Competitor prices are dated reference observations only; they are not substituted for BiponiBD’s stored price.

Setup and care

Place the display on a stable level surface with airflow around the rear housing. Connect a compatible HDMI or VGA cable, choose the matching input and set the computer to 1920 × 1080. Start at 120Hz; use the system display controls and a supported HDMI output to try the overclocked 144Hz mode when needed. VGA is listed up to 60Hz. Adjust tilt within the documented range, use a soft lint-free cloth and follow Dahua’s guide for cleaning and mounting. Do not press on the VA panel or spray cleaner directly on it. If the preferred mode is unavailable, check the GPU output, cable, driver and operating-system settings.

Specification notes

This listing is based on Dahua’s exact-model V1 page and linked April 2026 datasheet. Dahua states 21.45 inches, VA, 1920 × 1080, 120Hz overclocked to 144Hz, 1ms MPRT, 250 cd/m² typical brightness, 4000:1 typical contrast, 72% NTSC typical gamut, HDMI 1.4 and VGA, 75 × 75mm VESA, 43.5mm depth without base, 1.85kg net weight, and 12/15/18W basic/typical/maximum consumption. Retail tables differ on depth and power and may provide a secondary 5ms OD figure. The specification panel and FAQ preserve those distinctions. Confirm revision-specific details with the seller if a particular mount, refresh mode or power budget is essential.