Introduction
Thank you for choosing the KTC H27S5C 27-inch Curved Gaming Monitor. This manual provides essential information for setting up, operating, and maintaining your monitor. Please read it thoroughly before use to ensure proper functionality and to maximize your viewing experience.
Important Safety Information
- Ensure the monitor is placed on a stable, flat surface to prevent accidental falls.
- Do not block ventilation openings. Proper airflow is crucial to prevent overheating.
- Use only the power adapter supplied with the monitor.
- Keep the monitor away from water, moisture, and direct sunlight.
- Disconnect the power cable from the outlet before cleaning. Use a soft, dry cloth for cleaning. Avoid liquid cleaners.
- Do not attempt to repair the monitor yourself. Refer all servicing to qualified personnel.
Package Contents
Verify that all items are present in your package:
- KTC H27S5C 27-inch Curved Monitor x1
- Monitor Base x1
- HDMI Cable x1
- Power Adapter x1
- Power Cord x1
- Quick Start Guide (QSG) x1

Image: Contents of the KTC H27S5C monitor package, showing the monitor, stand components, HDMI cable, power adapter, and power cord.
Assembly Instructions
Attaching the Stand
- Carefully remove the monitor and base components from the packaging.
- Place the monitor face down on a soft, clean cloth to prevent scratches.
- Align the stand neck with the mounting slot on the back of the monitor.
- Secure the stand neck to the monitor using the provided screws.
- Attach the V-shaped base to the bottom of the stand neck and tighten the screw.
- Carefully lift the assembled monitor and place it on a stable desk.
VESA Mounting (Optional)
The monitor supports a 100mm x 100mm VESA mount for wall or arm installation. Remove the stand before attaching a VESA-compatible mount.

Image: Rear view of the KTC H27S5C monitor highlighting the 100mm x 100mm VESA mounting points.
Connecting Your Monitor
The KTC H27S5C monitor offers various connectivity options:
- HDMI 2.0 (x2): Connect to devices such as gaming consoles, PCs, or media players. Supports up to 2560x1440 resolution at 144Hz.
- DisplayPort 1.4 (x1): Connect to a PC for optimal performance, supporting up to 2560x1440 resolution at 144Hz.
- USB 2.0 (x1): For service and firmware upgrades only.
- Headphone Jack (x1): Connect external headphones or speakers.
Connection Steps:
- Connect the appropriate video cable (HDMI or DisplayPort) from your computer or device to the corresponding port on the monitor.
- Connect the power adapter to the monitor's DC input, then plug the power cord into a power outlet.
- (Optional) Connect headphones or external speakers to the headphone jack.
- Turn on the monitor and your connected device.

Image: Close-up of the KTC H27S5C monitor's rear input/output ports.
Video: An overview of the KTC H27S5C 27-inch QHD 144Hz Curved Monitor, demonstrating its features and suitability for work and office environments.
Operating Instructions
Power On/Off
Press the power button, usually located on the back or bottom of the monitor, to turn it on or off. The power indicator light will illuminate when the monitor is active.
On-Screen Display (OSD) Menu
The OSD menu allows you to adjust various monitor settings. Access it using the joystick or buttons typically found on the back or bottom of the monitor.
- Navigation: Use the joystick or directional buttons to navigate through menu options.
- Selection: Press the joystick or a dedicated button to select an option or confirm a setting.
- Exit: Move the joystick left or press an 'Exit' button to go back or close the OSD menu.
Common OSD Settings:
- Picture Settings: Adjust brightness, contrast, sharpness, and color temperature.
- Color Settings: Fine-tune color modes, gamma, and saturation.
- Input Source: Manually select between HDMI 1, HDMI 2, or DisplayPort inputs.
- Audio: Adjust volume for the headphone output.
- Gaming Features: Enable/disable Adaptive Sync, adjust response time, or activate crosshair overlays.
Key Features
Immersive 1500R Curved Design
The 1500R curvature of the KTC H27S5C monitor provides an immersive viewing experience, wrapping the display around your field of vision. This design helps reduce eye strain and enhances focus, making it suitable for both extended work sessions and intense gaming.

Image: The KTC H27S5C monitor from a top-down perspective, illustrating its 1500R curved screen.
Stunning QHD (2560x1440) Resolution
Experience crisp and detailed visuals with the 2560x1440 QHD resolution. This higher pixel density provides more screen real estate and sharper images compared to Full HD, benefiting both productivity and gaming.

Image: A visual comparison demonstrating the clarity of QHD resolution versus FHD on the KTC H27S5C monitor.
Smooth 144Hz Refresh Rate
The 144Hz refresh rate ensures fluid motion and reduced blur, which is particularly beneficial for fast-paced gaming. This higher refresh rate provides a more responsive and enjoyable visual experience.

Image: A visual representation of the difference between 100Hz and 144Hz refresh rates on the KTC H27S5C monitor.
HDR400 Support and Vibrant Colors
With HDR400 compliance, the monitor delivers enhanced contrast and brightness, resulting in more lifelike images with deeper blacks and brighter highlights. The 129% sRGB and 110% DCI-P3 color gamut coverage ensures accurate and vivid color reproduction for various content.

Image: Infographic detailing the KTC H27S5C monitor's visual performance features, including HDR400, brightness, color gamut, and contrast ratio.
Adaptive Sync Technology
The monitor supports Adaptive Sync (compatible with FreeSync and G-Sync), which synchronizes the display's refresh rate with your GPU's frame rate. This eliminates screen tearing and stuttering, providing a smoother gaming experience.

Image: A side-by-side comparison showing the effect of Adaptive Sync (FreeSync) on and off, illustrating the elimination of screen tearing.
Eye Care Technology
Built-in Low Blue Light and Flicker-Free technologies help reduce eye fatigue during prolonged use. These features contribute to a more comfortable viewing experience, especially during long work or gaming sessions.

Image: Visual representation of the monitor's eye care features, including Low Blue Light and Flicker-Free technology.
Troubleshooting
No Power
- Ensure the power cord is securely connected to the monitor and a working power outlet.
- Check if the power adapter is correctly connected to the monitor.
- Verify the power outlet is functional by plugging in another device.
No Signal
- Confirm that the video cable (HDMI or DisplayPort) is securely connected to both the monitor and your computer/device.
- Ensure the correct input source is selected in the monitor's OSD menu.
- Check if your computer/device is powered on and outputting a video signal.
- Try a different video cable or port if available.
Flickering or Distorted Image
- Check the video cable connections. Loose connections can cause issues.
- Adjust the refresh rate in your computer's display settings to match the monitor's supported rates (e.g., 144Hz).
- Disable Adaptive Sync in the OSD menu or your graphics card settings to see if it resolves the issue.
- Ensure your graphics card drivers are up to date.
Dead Pixels
While rare, a small number of dead or stuck pixels are inherent to LCD technology and are generally not considered a defect unless they exceed a certain threshold. Refer to KTC's pixel policy for more information.
Specifications
| Feature | Detail |
|---|---|
| Brand | KTC |
| Model Number | H27S5C |
| Screen Size | 27 Inches |
| Resolution | QHD Wide 1440p (2560 x 1440 Pixels) |
| Curvature | 1500R |
| Refresh Rate | 144 Hz |
| Response Time | 5 Milliseconds |
| Brightness | 400 Candela per Square Meter |
| Contrast Ratio | 4000:1 |
| Color Gamut | 129% sRGB |
| HDR Support | HDR400 |
| Adaptive Sync | FreeSync, G-Sync Compatible |
| Connectivity | 2x HDMI 2.0, 1x DisplayPort 1.4, 1x USB 2.0 (Service), 1x Headphone Jack |
| VESA Mounting | 100mm x 100mm |
| Adjustments | Tilt (-5° to 20°) |
| Additional Features | Blue Light Filter, Flicker-Free |
Maintenance
Cleaning the Screen
- Turn off the monitor and unplug the power cord.
- Gently wipe the screen with a soft, lint-free cloth.
- For stubborn marks, lightly dampen the cloth with water or a specialized screen cleaner (ensure it's safe for LCD/LED displays) and wipe carefully. Do not spray liquid directly onto the screen.
Cleaning the Casing
- Use a soft, dry cloth to wipe the monitor casing.
- Avoid using abrasive cleaners or solvents, as they may damage the surface.
Warranty and Support
The KTC H27S5C monitor comes with a 3-Year Manufacturer Warranty. For warranty claims, technical support, or service inquiries, please contact KTC customer support through their official website or the retailer where the product was purchased. Keep your proof of purchase for warranty validation.





