LM28-S400 - Monitor Dahua Technology - Free user manual and instructions
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| Type | Monitor |
| Brand | Dahua Technology |
| Model | LM28-S400 |
| Screen Size | 28 inches |
| Resolution | 3840 x 2160 (4K UHD) |
| Panel Type | IPS |
| Aspect Ratio | 16:9 |
| Brightness | 300 cd/m² |
| Contrast Ratio | 1000:1 |
| Response Time | 5 ms |
| Refresh Rate | 60 Hz |
| Connectivity | 2 x HDMI 2.0, 1 x DisplayPort 1.2, 2 x USB 3.0 |
| Power Consumption | 40 W (typical) |
| Dimensions (W x H x D) | 635 x 465 x 180 mm (with stand) |
| Weight | 5.5 kg |
| VESA Mount | 100 x 100 mm |
| Speakers | Yes, 2 x 3 W |
| Features | Flicker-free, Low Blue Light, On-Screen Display |
| Maintenance | Clean with soft, dry cloth; do not use harsh chemicals |
| Safety | Use only provided power adapter; avoid liquid contact |
| Spare Parts | Contact Dahua support for replacement parts |
Frequently Asked Questions - LM28-S400 Dahua Technology
How do I connect the monitor to my computer?
Use an HDMI or DisplayPort cable to connect from your computer to the monitor. Ensure both devices are powered off during connection.
What is the recommended resolution for this monitor?
The native resolution is 3840 x 2160 (4K) at 60 Hz. For best results, set your computer output to this resolution.
How do I clean the monitor screen?
Power off the monitor and use a soft, dry microfiber cloth. For stubborn stains, slightly dampen the cloth with water. Avoid using alcohol, ammonia, or abrasive cleaners.
Can I mount this monitor on a wall?
Yes, the monitor supports VESA 100x100 mm mounts. Use a compatible wall mount and ensure it can support the monitor's weight.
How do I adjust the monitor settings?
Press the joystick button at the rear/bottom of the monitor to access the On-Screen Display (OSD) menu. Navigate to adjust brightness, contrast, color, and other settings.
Is the monitor flicker-free?
Yes, the LM28-S400 features flicker-free technology to reduce eye strain during long sessions.
What should I do if there is no display?
Check that the power cable is connected and the power LED is on. Verify the video cable is securely attached to both the monitor and computer. Try a different input source.
Does the monitor include built-in speakers?
Yes, it has dual 3W speakers. Audio can be output via HDMI or DisplayPort; adjust volume via the OSD menu.
How do I enable Low Blue Light mode?
Access the OSD menu, navigate to the preset modes or color settings, and select 'Low Blue Light' or adjust color temperature to reduce blue light emission.
What is the warranty period for this monitor?
Dahua Technology typically offers a 3-year warranty for the LM28-S400. Check your region for specific terms. Retain your purchase receipt.
User questions about LM28-S400 Dahua Technology
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USER MANUAL LM28-S400 Dahua Technology
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Product information
Brand : Dahua Technology
Model : LM28-S400
Category : Monitor