1. Introduction
The Alxum DT269W-D USB-C Wireless HDMI Transmitter & Receiver kit provides a versatile solution for wirelessly displaying content from your USB-C enabled devices to a larger screen. This 2-in-1 system supports both direct point-to-point connections and receiver-only casting via AirPlay or Miracast, offering flexibility for various presentation and entertainment needs. Enjoy stable 1080P@60Hz output with 4K decode capability over distances up to 165 feet (50 meters) in open spaces.
2. What's in the Box
- 1 x Transmitter (TX)
- 1 x Receiver (RX)
- 1 x USB-C to USB-A Power Cable
Image: The Alxum USB-C Wireless HDMI Transmitter (TX) and Receiver (RX) units, along with the USB-C power cable, as packaged in the box.
3. Key Features
- 2-in-1 Versatility: Supports both direct point-to-point connection (TX+RX) for stability and receiver-only casting (RX only) via AirPlay or Miracast for convenience.
- Plug & Play: For devices with a full-function USB-C port (DisplayPort Alt Mode support), simply plug in the transmitter and receiver. No drivers, Wi-Fi, or Bluetooth pairing required in direct connection mode.
- Stable 165ft Range: Advanced dual-band (5G+2.4G) technology ensures a strong, anti-interference signal for transmission up to 165 feet (50 meters) in open spaces.
- Crystal Clear 1080P@60Hz Output: Delivers smooth 1080P@60Hz HD video and audio, with 4K decode capability.
- Thoughtful Design: Transmitter features a side-positioned USB-C port to avoid blocking adjacent ports. Includes a one-tap privacy button to instantly blank the public screen.
- Dual Productivity Modes: Easily mirror your screen for presentations or extend it for a dual-monitor setup.
- Portable: Compact and lightweight design for easy transport and setup in various environments.
4. Setup Instructions
4.1 Direct Connect Mode (TX + RX)
This mode provides the most stable connection and is ideal for presentations and video streaming where minimal latency is desired. No software installation or network configuration is required.
- Connect the Receiver (RX): Plug the HDMI end of the Receiver (RX) into an available HDMI port on your display (TV, monitor, or projector).
- Power the Receiver (RX): Connect the provided USB-C to USB-A power cable to the USB-C port on the RX unit and plug the USB-A end into a 5V/2A power source (e.g., a USB port on your TV/monitor or a USB wall adapter). Ensure the RX unit powers on.
- Connect the Transmitter (TX): Plug the USB-C end of the Transmitter (TX) into the full-function USB-C port of your source device (laptop, smartphone, or tablet). Your source device must support DisplayPort Alt Mode for video output.
- Automatic Connection: Wait a few seconds for the devices to establish a stable connection. Your display should automatically show the mirrored or extended screen from your source device.
Image: Visual guide for connecting the Alxum Wireless HDMI Receiver to a TV's HDMI port and power, and the Transmitter to a laptop's USB-C port.
Video: An unboxing and testing demonstration of the Alxum Wireless USB-C Transmitter and HDMI Receiver, showing the components and basic setup.
4.2 Receiver-Only Casting Mode (RX only)
If your source device does not have a full-function USB-C port, or for ultimate convenience, you can use the Receiver (RX) alone to cast wirelessly via AirPlay (for Apple devices) or Miracast (for Android/Windows devices). Note: This mode does NOT work with Google Cast.
- Connect and Power the Receiver (RX): Follow steps 1 and 2 from the "Direct Connect Mode" above to connect and power the RX unit.
- Select Input: Ensure your display is set to the correct HDMI input where the RX is connected. The RX will display instructions for AirPlay/Miracast connection.
- Initiate Casting from Source Device:
- For Apple iPhone/iPad: Swipe down to open Control Center, tap "Screen Mirroring," and select your receiver (e.g., "UniMirrorLite-XXXX"). Enter the AirPlay Code shown on your TV screen if prompted.
- For Android Phone: Swipe down to open the Quick Settings panel, tap "Smart View" / "Cast" / "Wireless display," and select your receiver (e.g., "UniMirrorLite-XXXX").
- For Apple Mac: Click the Control Center icon in the menu bar, click "Screen Mirroring," select your receiver, and enter the AirPlay Code if prompted.
- For Windows 10 or above: Press the Windows key + K on your keyboard. From the "Cast" panel, select your receiver.
Image: Step-by-step guide for connecting Apple iPhone, Android phone, Apple Mac, and Windows 10+ devices to the receiver in Receiver-Only Mode.
Video: A short video demonstrating the Alxum Wireless USB-C Transmitter and HDMI Receiver, highlighting its ease of use and wireless capabilities.
5. Operating Modes
The Alxum DT269W-D supports two primary display modes:
- Mirror Mode: Duplicates your device's screen onto the external display. Ideal for presentations or sharing content with an audience.
- Extend Mode: Extends your device's screen, allowing the external display to act as an additional desktop. This is useful for multitasking and increasing productivity.
Image: Illustration showing a laptop screen being mirrored and extended onto an external display using the wireless system.
Privacy Button
The Transmitter (TX) unit features a privacy button. A single press of this button will instantly blank the external display, providing privacy during sensitive moments or when you need to temporarily hide your screen content.
Image: Close-up of the Alxum Transmitter (TX) showing its side-plug design and the privacy button for instant screen blanking.
6. Compatibility
The Alxum DT269W-D is designed for broad compatibility with various devices and displays:
- Transmitter (TX) Compatibility:
- Smartphones, Laptops, Tablets with a full-function USB-C port (supporting DisplayPort Alt Mode).
- Receiver (RX) Compatibility:
- Monitors, TVs, Projectors with an HDMI input.
- Wireless Casting (RX Only):
- Apple devices (iPhone, iPad, Mac) via AirPlay.
- Android phones and Windows laptops via Miracast.
- Note: Does NOT support Google Cast.
Image: Diagram illustrating the compatibility of the Alxum Transmitter (TX) with USB-C devices and the Receiver (RX) with HDMI displays, including support for AirPlay and Miracast.
7. Technical Specifications
| Brand | Alxum |
| Model Name | DT269W-D |
| Connectivity Technology | Wireless HDMI |
| Connector Type | Receiver: HDMI, Transmitter: USB-C |
| Resolution | 1080p (4K Decode) |
| Video Output Resolution | 1920x1080 pixels |
| Wireless Transmission | Dual-Band (5G+2.4G) |
| Max Transmission Distance | 165 feet / 50 meters (in open spaces) |
| Compatible Devices | Laptop, Smartphone, Tablet (with DisplayPort Alt Mode for TX) |
| Controller Type | Button Control (Privacy Button on TX) |
| Color | White |
| Item Weight | 3.52 ounces |
| Product Dimensions | 0.95 x 0.46 x 2.54 inches |
8. Troubleshooting
- No Signal on Display:
- Ensure both TX and RX units are properly connected and powered.
- Verify the display is set to the correct HDMI input.
- For Direct Connect Mode, confirm your source device's USB-C port supports DisplayPort Alt Mode.
- Try pressing the "Reset" button on the RX unit.
- Intermittent Connection or Lag:
- Reduce the distance between the TX and RX units.
- Ensure there are no significant obstructions (thick walls, metal objects) between the units.
- Minimize other wireless interference sources (e.g., other 5G/2.4G devices).
- Ensure the RX unit is receiving adequate power (use a dedicated 5V/2A adapter if TV USB port is insufficient).
- No Audio:
- Check audio settings on your source device and the connected display.
- Ensure the volume is not muted on either device.
- Receiver-Only Casting Issues:
- Confirm your device supports AirPlay or Miracast (not Google Cast).
- Ensure your device and the RX unit are on the same Wi-Fi network (if required by your device's casting method).
- Restart your source device and the RX unit.
9. Maintenance
To ensure the longevity and optimal performance of your Alxum Wireless HDMI Transmitter & Receiver, follow these simple maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the units. Avoid using liquid cleaners or aerosols, which may damage the components.
- Storage: When not in use, store the units in a cool, dry place away from direct sunlight and extreme temperatures. Use the protective cap for the HDMI connector on the RX unit to prevent dust accumulation.
- Handling: Handle the units with care. Avoid dropping them or subjecting them to strong impacts.
- Power: Always use the provided USB power cable or a compatible 5V/2A power source for the receiver.
10. Warranty and Support
Alxum products are designed for reliability and performance. For any questions, technical assistance, or warranty claims, please contact Alxum customer support.
- Customer Service: Alxum offers 24-hour customer service.
- Return or Exchange: Products are eligible for return or exchange within 24 months of purchase.
- Technical Support: Lifetime technical support is provided for this product.
Image: Graphic detailing Alxum's after-sale service, including 24-hour customer service, 24-month return/exchange, and lifetime technical support.
