1. Introduction
This manual provides instructions for the LDLrui Wireless HDMI Transmitter and Receiver (Model LRWL004). This device enables wireless transmission of HDMI signals from various source devices to displays, projectors, or HDTVs, supporting resolutions up to 1080p with 4K decoding capabilities. It is designed for ease of use with a plug-and-play setup, requiring no drivers, applications, Wi-Fi, or Bluetooth.
Key features include a transmission range of up to 98 feet (30 meters), dual-band 2.4G/5G chip for stable signal, low latency, and efficient heat dissipation for extended operation.
2. Package Contents
Verify that all items listed below are included in your package:
- HDMI Transmitter (TX) x 1
- HDMI Receiver (RX) x 1
- User Manual x 1
- HDMI Extension Cable x 1
- USB Charging Cable x 2
- Micro HDMI Adapter x 1
- Mini HDMI Adapter x 1

Image: Contents of the LDLrui Wireless HDMI Transmitter and Receiver package.
3. Product Overview
The LDLrui Wireless HDMI system consists of two main units: a Transmitter (TX) and a Receiver (RX). Both units are compact and designed for portability.

Image: Front view of the LDLrui Wireless HDMI Transmitter (TX) and Receiver (RX) units, along with Mini and Micro HDMI adapters.

Image: Illustration of the compact size and portability of the transmitter and receiver units.
4. Setup Instructions
Follow these steps to set up your LDLrui Wireless HDMI system:
- Step 1: Install Receiver (RX)
Connect the HDMI Receiver (RX) to the HDMI input port of your display device (TV, monitor, or projector). Power the receiver by connecting one of the provided USB charging cables to its USB port and a 5V2A USB power source (e.g., a USB port on your display, a USB charger, or a power bank). - Step 2: Install Transmitter (TX)
Connect the HDMI Transmitter (TX) to the HDMI output port of your source device (laptop, PC, camera, TV box). Power the transmitter by connecting the second USB charging cable to its USB port and a 5V2A USB power source. - Step 3: Status Display and Connection
After connecting and powering both units, the LED indicator lights on both the TX and RX units will flash. The connection process typically completes within 3-10 seconds, and the LED indicators will become solid once a stable connection is established.
Important Note: Both the transmitter and receiver units require external power via the provided USB cables to function correctly. Ensure both units are connected to a stable 5V2A power source.

Image: Visual guide for connecting the receiver to a display, the transmitter to a laptop, and observing the connection status.
5. Operating Instructions
The LDLrui Wireless HDMI system operates automatically once connected and powered. It supports two primary display modes:
- Mirror Mode: Duplicates the content from your source device onto the connected display. This mode is suitable for presentations, gaming, or watching movies.
- Extend Mode: Extends your desktop, allowing you to have different content on your source device and the connected display. This mode is suitable for multitasking.
The system is compatible with a wide range of devices, including laptops, PCs, cameras, TV boxes, and gaming consoles (PS3/4/5) as source devices, and HDTVs, projectors, and monitors as display devices. The included Mini HDMI and Micro HDMI adapters facilitate connection to various devices.

Image: Depiction of Mirror Mode and Extend Mode functionality.

Image: Compatibility chart for the LDLrui Wireless HDMI system, illustrating various compatible source and display devices.

Image: Connection examples using standard HDMI, Micro HDMI, and Mini HDMI adapters.
6. Maintenance
To ensure the longevity and optimal performance of your LDLrui Wireless HDMI system, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the units. Avoid using liquid cleaners or solvents.
- Storage: Store the devices in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Heat Dissipation: The units are designed with multiple heat dissipation holes to prevent overheating during prolonged operation. Ensure these vents are not obstructed to maintain performance and extend product lifespan.

Image: Illustration demonstrating the superior heat dissipation design of the LDLrui unit compared to other devices.
7. Troubleshooting
If you encounter issues with your LDLrui Wireless HDMI system, refer to the following troubleshooting tips:
- No Signal/No Display:
- Ensure both the Transmitter (TX) and Receiver (RX) units are properly connected to their respective HDMI ports.
- Verify that both units are receiving adequate power from a 5V2A USB power source. The LED indicators should be solid, not flashing.
- Check the input source selection on your display device to ensure it is set to the correct HDMI input port where the RX unit is connected.
- Try restarting both the source device and the display device.
- Intermittent Connection/Signal Drop:
- Ensure there are no significant obstructions (e.g., thick walls, large metal objects) between the TX and RX units that could interfere with the wireless signal.
- Reduce the distance between the TX and RX units. The maximum effective range is 98 feet (30 meters) in an open environment.
- Minimize other wireless interference from devices operating on 2.4GHz or 5GHz frequencies.
- Confirm both units are receiving stable power.
- Poor Video Quality/Lag:
- Ensure your source device is outputting a compatible resolution (up to 1080p). While the system supports 4K decoding, the output resolution is 1080p.
- Check for environmental interference as mentioned above.
- Verify that the HDMI cables and adapters used are in good condition.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | LRWL004 |
| Brand | LDLrui |
| Connectivity Technology | HDMI, Wi-Fi (2.4G/5G Dual Band) |
| Connector Type | HDMI |
| Resolution | 1080p (4K Decoding Supported) |
| Transmission Distance | Up to 98 feet (30 meters) |
| Latency | Low latency (<0.01s) |
| Power Input | 5V2A via USB-C (for each unit) |
| Product Dimensions | 2.1 x 0.5 x 2.8 inches (5.3 x 1.3 x 7.1 cm) |
| Item Weight | 5.9 ounces (167 grams) |
| Special Features | Low Latency, Plug and Play, Portable, Screen Mirroring, Extend Mode, Efficient Heat Dissipation |
9. Warranty and Support
LDLrui is committed to providing customer satisfaction. This product comes with a lifetime warranty. For technical support, troubleshooting assistance, or warranty claims, please contact LDLrui customer service through the retailer where the product was purchased or visit the official LDLrui website for contact information.