1. Giới thiệu
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. Có gì trong hộp
- 1 x Máy phát (TX)
- 1 x Bộ thu (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. Các tính năng chính
- Tính đa năng 2 trong 1: Supports both direct point-to-point connection (TX+RX) for stability and receiver-only casting (RX only) via AirPlay or Miracast for convenience.
- Cắm và chạy: 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.
- Thiết kế chu đáo: 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.
- Cầm tay: Compact and lightweight design for easy transport and setup in various environments.
4. Hướng dẫn thiết lập
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.
- Kết nối bộ thu (RX): Plug the HDMI end of the Receiver (RX) into an available HDMI port on your display (TV, monitor, or projector).
- Cấp nguồn cho bộ thu (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.
- Kết nối bộ phát (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.
- Kết nối tự động: 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.
- Chọn đầu vào: 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.
- Đối với điện thoại Android: 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. Chế độ hoạt động
The Alxum DT269W-D supports two primary display modes:
- Chế độ Gương: Duplicates your device's screen onto the external display. Ideal for presentations or sharing content with an audience.
- Chế độ mở rộng: Extends your device's screen, allowing the external display to act as an additional desktop. This is useful for multitasking and increasing năng suất.

Image: Illustration showing a laptop screen being mirrored and extended onto an external display using the wireless system.
Nút riêng tư
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. Khả năng tương thích
The Alxum DT269W-D is designed for broad compatibility with various devices and displays:
- Khả năng tương thích của bộ phát (TX):
- Smartphones, Laptops, Tablets with a full-function USB-C port (supporting DisplayPort Alt Mode).
- Khả năng tương thích của bộ thu (RX):
- 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. Thông số kỹ thuật
| Thương hiệu | Alxum |
| Tên mẫu | DT269W-D |
| Công nghệ kết nối | HDMI không dây |
| Loại đầu nối | Receiver: HDMI, Transmitter: USB-C |
| Nghị quyết | 1080p (4K Decode) |
| Độ phân giải đầu ra video | 1920x1080 pixel |
| Truyền dẫn không dây | Dual-Band (5G+2.4G) |
| Khoảng cách truyền tối đa | 165 feet / 50 meters (in open spaces) |
| Thiết bị tương thích | Laptop, Smartphone, Tablet (with DisplayPort Alt Mode for TX) |
| Loại bộ điều khiển | Button Control (Privacy Button on TX) |
| Màu sắc | Trắng |
| Trọng lượng sản phẩm | 3.52 ounce |
| Kích thước sản phẩm | 0.95 x 0.46 x 2.54 inch |
KHAI THÁC. Xử lý sự cố
- Không có tín hiệu trên màn hình:
- Ensure both TX and RX units are properly connected and powered.
- Hãy kiểm tra xem màn hình đã được thiết lập đúng đầu vào HDMI chưa.
- 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.
- Kết nối chập chờn hoặc độ trễ:
- Giảm khoảng cách giữa bộ phát (TX) và bộ thu (RX).
- 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).
- Không có âm thanh:
- Check audio settings on your source device and the connected display.
- Hãy đảm bảo âm lượng không bị tắt tiếng trên cả hai thiết bị.
- 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. Bảo trì
To ensure the longevity and optimal performance of your Alxum Wireless HDMI Transmitter & Receiver, follow these simple maintenance guidelines:
- Vệ sinh: Use a soft, dry cloth to clean the exterior of the units. Avoid using liquid cleaners or aerosols, which may damage the components.
- Kho: 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.
- Xử lý: Cẩn thận khi sử dụng thiết bị. Tránh làm rơi hoặc va đập mạnh.
- Quyền lực: Always use the provided USB power cable or a compatible 5V/2A power source for the receiver.
10. Bảo hành và Hỗ trợ
Alxum products are designed for reliability and performance. For any questions, technical assistance, or warranty claims, please contact Alxum customer support.
- Dịch vụ khách hàng: Alxum offers 24-hour customer service.
- Return or Exchange: Products are eligible for return or exchange within 24 months of purchase.
- Hỗ trợ kỹ thuật: 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.





