LM25-B221B - Monitor Dahua Technology - Free user manual and instructions
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| Product Type | 25-inch LED-backlit LCD monitor |
| Brand | Dahua Technology |
| Model | LM25-B221B |
| Display Diagonal | 25 inches (63.5 cm) |
| Panel Type | TFT LCD with LED backlight |
| Native Resolution | 1920 x 1080 (Full HD) |
| Aspect Ratio | 16:9 |
| Brightness | 250 cd/m² |
| Contrast Ratio | 1000:1 (typical) |
| Response Time | 5 ms (GTG) |
| Viewing Angles | 178° horizontal / 178° vertical |
| Signal Inputs | VGA, HDMI 1.4 |
| Power Supply | 100–240 V AC, 50/60 Hz |
| Power Consumption | Typical 25 W, Standby < 0.5 W |
| VESA Mounting | 75 x 75 mm |
| Dimensions (W x H x D) | 557 x 415 x 180 mm (with stand) |
| Weight | 3.4 kg (with stand) |
| Special Features | Flicker-free technology, low blue light mode |
| Cleaning and Maintenance | Wipe with a soft, lint-free cloth; avoid chemicals |
| Safety Certifications | CE, FCC, RoHS |
| Spare Parts and Repairability | Replaceable components; contact authorized service |
Frequently Asked Questions - LM25-B221B Dahua Technology
How do I connect the LM25-B221B to my computer?
Connect the monitor using an HDMI or VGA cable. Ensure both devices are off, plug the cable, then turn on the monitor and computer. Select the correct input source via the OSD (On-Screen Display) menu.
What is the recommended resolution for this monitor?
The native resolution is 1920 x 1080 (Full HD). For best image quality, set your PC to this resolution in display settings.
How do I adjust the brightness and contrast?
Press the OSD button on the bottom of the monitor to open the menu. Navigate to the "Brightness" and "Contrast" options using the arrow keys and adjust with the +/- buttons.
Does the monitor support wall mounting?
Yes. The LM25-B221B has a VESA mount pattern of 75 x 75 mm. Use a compatible wall mount bracket and follow the instructions in the manual.
Can I clean the screen with regular glass cleaner?
No. Use a soft, dry microfiber cloth to remove dust. Dampen the cloth slightly with water if needed, but do not apply any liquid directly to the screen and avoid ammonia or alcohol-based cleaners.
What should I do if there is no signal on the screen?
Check that the correct input source is selected. Verify the cable is connected firmly. Test with another cable or device. Also confirm your computer is in a supported resolution.
How do I enable the low blue light mode to reduce eye strain?
Open the OSD menu, go to "Picture" or "Color" settings, and select "Low Blue Light" or "Reading Mode". Adjust the level as desired.
What are the power consumption specifications of this monitor?
The monitor consumes approximately 25 W during normal operation and less than 0.5 W in standby mode. It operates with an AC input of 100-240 V, 50/60 Hz.
Is the LM25-B221B compatible with both NVIDIA and AMD graphics cards?
Yes. The monitor is compatible with any graphics card that supports HDMI or VGA output. It does not support FreeSync or G-Sync.
Where can I find the user manual or additional resources?
The full user manual is available as a PDF download on the Notice-Facile website. You can also contact Dahua Technology support for further assistance.
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USER MANUAL LM25-B221B Dahua Technology
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Product information
Brand : Dahua Technology
Model : LM25-B221B
Category : Monitor