Kebidumei 150M Wireless HDMI Extender User Manual

1. Introduction

The Kebidumei 150M Wireless HDMI Extender is designed for wireless transmission of HD audio and video signals. Featuring an imported chip and upgraded antenna, it offers stable and smooth signal transmission with excellent image processing capabilities. This plug-and-play device eliminates the need for complex wiring, drivers, or internet connection, making it an efficient solution for extending HDMI signals.

It is suitable for various applications including big screen video conferences, home entertainment, online learning, business presentations, educational training, and gaming, providing a more immersive and comfortable viewing experience while protecting your eyes.

2. Package Contents

• HDMI Wireless Transmitter (TX)
• HDMI Wireless Receiver (RX)
• USB Power Cables
• User Manual (this document)

3. Product Features

• HDMI video and audio transmission via built-in wireless protocol (no Wi-Fi or internet required).
• HDMI 1.3 and HDCP1.2 compatible.
• Supports HD video resolution up to 1920x1080@60Hz.
• Efficient transfer for fluent playback.
• Built-in automatic balance system for clear and stable picture.
• Built-in ESD electrostatic protection circuit for comprehensive security.
• Simple plug-and-play installation, no setup required.
• Supports one-to-many (1 TX to up to 4 RXs) and many-to-one (up to 6 TXs to 1 RX) configurations.

4. Setup Instructions

Follow these steps to set up your Wireless HDMI Extender:

1. Connect the Receiver (RX) to your Display Device:
   Plug the HDMI end of the Receiver (RX) into an available HDMI input port on your TV, monitor, or projector. Connect the USB power cable to the DC 5V port on the RX unit and plug the other end into a USB power source (e.g., TV's USB port, USB wall adapter).
2. Connect the Transmitter (TX) to your Source Device:
   Plug the HDMI end of the Transmitter (TX) into the HDMI output port of your source device (e.g., laptop, PC, PS4, Xbox, TV Box). Connect the USB power cable to the DC 5V port on the TX unit and plug the other end into a USB power source (e.g., laptop's USB port, USB wall adapter).
3. Select HDMI Input on Display:
   Using your display device's remote control, switch the input source to the HDMI port where the RX unit is connected. The display should show a 'Searching TX' message or a startup interface.
4. Pairing (if necessary):
   The devices are usually pre-paired. If they do not connect automatically, press the 'Pair' button on both the TX and RX units simultaneously until the status lights indicate a successful connection.
5. Configure Display Mode (for computers):
   If connecting to a laptop or PC, press 'Windows + P' on your keyboard to open the project menu. You can then select 'Duplicate' (mirror mode) to show the same content on both screens, or 'Extend' (extension mode) to use the display as a second screen.
6. Configure Audio Output (for computers):
   Right-click the speaker icon in your computer's taskbar, select 'Sound settings', then go to the 'Playback' tab. Choose 'HDMI' (or the name corresponding to the extender) as the default playback device to output audio to your display.

5. Operating Modes

5.1. Mirror/Extend Mode

When connecting to a computer, you can choose between two display modes:

• Screen Mirror: Displays the same content on both your source device and the external display. Ideal for presentations or sharing content.
• Screen Extend: Allows your external display to act as a second screen, showing different content from your source device. This mode is generally available for computer use and requires specific software/hardware support from both the system and equipment.

5.2. Multi-Screen Display Modes

The extender supports flexible multi-screen configurations:

• One-to-Many Mode (1 TX to 4 RXs): One transmitter can be connected to up to four receivers, allowing a single source to broadcast to multiple displays simultaneously.
• Many-to-One Mode (6 TXs to 1 RX): Up to six transmitters can be connected to one receiver. When multiple transmitters are connected, the user needs to press the 'Pair' button on the desired transmitter to switch the display. The display will show the content from the transmitter whose button was pressed last.

6. Specifications

7. Transmission Distance Guidelines

The wireless transmission distance can vary based on the number of receivers and environmental factors such as walls and barriers. The following distances are for reference only; actual performance may vary.

• 1 TX to 1 RX: Maximum 50 meters
• 1 TX to 2 RXs: Maximum 30 meters
• 1 TX to 3 RXs: Maximum 20 meters
• 1 TX to 4 RXs: Maximum 10 meters

For optimal performance, use the extender in a barrier-free open space. Walls and other obstructions will significantly reduce the signal transmission distance.

8. Compatible Devices

9. Maintenance

• Keep the device in a cool, dry place away from direct sunlight and heat sources.
• Avoid exposing the device to water or excessive humidity.
• Clean the device with a soft, dry cloth. Do not use liquid or aerosol cleaners.
• Ensure proper ventilation around the units to prevent overheating.
• Do not attempt to disassemble or repair the device yourself, as this will void the warranty.

10. Troubleshooting

• No Signal/Black Screen:
  
  • Ensure both TX and RX units are properly powered via their USB cables.
  • Verify that the HDMI cables are securely connected to both the source and display devices.
  • Check that the display device is set to the correct HDMI input source.
  • Try re-pairing the TX and RX units by pressing their respective 'Pair' buttons.
  • Reduce the distance between the TX and RX units and ensure there are no significant obstructions (walls, furniture) blocking the signal path.
• Intermittent Signal/Poor Picture Quality:
  
  • The wireless transmission distance is affected by barriers. Ensure the units are in a clear line of sight or within the recommended range for your environment (e.g., through 1 wall: 15-25m).
  • Interference from other 5G wireless devices might affect performance. Try repositioning the units.
  • Ensure the source device is outputting a compatible resolution (up to 1080P@60Hz).
• No Audio:
  
  • For computer sources, ensure the audio output is set to the HDMI extender in your sound settings (refer to Setup Instructions, Step 6).
  • Check the volume levels on both your source device and display.
• Device Overheating:
  
  • Ensure the units have adequate ventilation and are not covered.
  • Disconnect the device and allow it to cool down if it feels excessively hot.

11. User Tips

• For the best performance, especially with multiple receivers, try to minimize physical obstructions between the transmitter and receiver units.
• Always use the provided USB power cables to ensure stable power supply to both units.
• If you experience any lag or signal degradation, try reducing the distance between the TX and RX units or ensuring a clearer line of sight.
• Remember that the RX unit cannot function independently; it must always be paired with a TX unit.

12. Warranty and Support

For warranty information or technical support, please contact the seller or refer to the product's purchase documentation. Keep your proof of purchase for any warranty claims.