Introduction
The 1Mii RT5066 is a 2.4Ghz wireless audio transmitter and receiver set designed to provide high-fidelity audio transmission with ultra-low latency over long distances. This system eliminates the need for cumbersome audio cables, allowing you to wirelessly connect your audio sources (like TVs, PCs, MP4 players) to your audio output devices (such as powered speakers, soundbars, or amplifiers) with exceptional sound quality and synchronization.

The 1Mii RT5066 Wireless Audio Transmitter and Receiver units.
Package Contents
Please check the box for the following items:
- 1Mii RT5066 Wireless Audio Transmitter
- 1Mii RT5066 Wireless Audio Receiver
- User Manual (this document)
- 3.5mm to RCA Cable (x2)
- DC-5V Charging Cable (x2)
- USB Charging Plug (x2)

The RT5066 transceiver set and its included accessories.
Product Overview
The RT5066 system consists of two main units: a Transmitter and a Receiver. Both units are compact and feature essential ports and indicators for easy operation.

Labeled diagram of the Transmitter and Receiver units.
Components:
- Power Button: Used to manually turn the unit on or off.
- LED Indicator: Provides status feedback (e.g., power on, pairing, connected).
- Reset Button: For resetting the device if needed.
- Antenna: For wireless signal transmission and reception.
- DC 5V Input: Power input port.
- Audio In (RCA): For connecting audio sources to the Transmitter.
- Audio Out (RCA): For connecting audio output devices to the Receiver.
Setup Instructions
Follow these steps to set up your 1Mii RT5066 Wireless Audio Transmitter-Receiver system:
1. Connect the Transmitter:
- Connect one end of a DC-5V Charging Cable to the Transmitter's DC 5V port and the other end to a USB Charging Plug, then plug it into a power outlet.
- Connect your audio source (e.g., TV, PC, MP4 player) to the Transmitter's Audio In ports using the provided 3.5mm to RCA Cable or your own RCA cables. Ensure the audio output from your source is connected to the Transmitter's input.

Transmitter connection to a TV.
2. Connect the Receiver:
- Connect the second DC-5V Charging Cable to the Receiver's DC 5V port and the other end to a USB Charging Plug, then plug it into a power outlet.
- Connect your audio output device (e.g., powered speakers, soundbar, power amplifier) to the Receiver's Audio Out ports using the provided 3.5mm to RCA Cable or your own RCA cables. Ensure the Receiver's output is connected to the input of your audio device.

Receiver connection to speakers.
3. Power On and Pairing:
Once both the Transmitter and Receiver are connected to power, they will automatically turn on and attempt to pair with each other. The LED indicators will show the connection status. The system is designed for plug-and-play operation, meaning manual pairing is typically not required.

Compatible and incompatible device connections.
Note: The RT5066 does not support HDMI connections and cannot be used with Bluetooth devices (headphones, speakers, transmitters, or receivers).
Video: Product overview and setup demonstration for the 1Mii RT5066 Wireless Audio Transmitter and Receiver.
Operating Instructions
Power On/Off:
The units will automatically power on when connected to a power source. To manually power off, press and hold the Power Button on each unit. Press briefly to power on.
Audio Playback:
Once both units are powered on and paired (indicated by stable LED lights), simply start playing audio from your connected source device. The audio will be wirelessly transmitted to your output device.
Volume Control:
Adjust the volume directly on your audio source device (e.g., TV, PC) or on your connected audio output device (e.g., powered speakers, amplifier).
Range:
The RT5066 offers an extended range of up to 320 feet (100 meters) in open air and 100-200 feet (30-50 meters) indoors. This allows for flexible placement of your audio components throughout your home or office.

Extended long range capability.
Specifications
| Feature | Specification |
|---|---|
| Model Number | RT5066 |
| Brand Name | 1Mii |
| Product Name | 1Mii Wireless Audio Transmitter&Receiver Set-RT5066 |
| Wireless Type | WiFi |
| WIFI Standard | 2.4G |
| Interface | 3.5 MM |
| Interface Type | RCA |
| Content | AUDIO |
| High Definition Support | None |
| Sampling rate | 192K /24bit |
| Frequency band | 2.4GHz |
| Distortion | <0.1% |
| SNR | 85dB |
| Super Audio latency | <20ms, also no delay |
| Ultra Working distance | Up to 328ft (100m) in opening air |
| Support Memory Card | No |
| Package | Yes |
| Origin | Mainland China |
| Certification | CE, FCC |
Troubleshooting
If you encounter issues with your RT5066 system, please refer to the following common solutions:
- No Sound or Poor Sound Quality:
- Ensure both the Transmitter and Receiver are properly powered and their LED indicators are stable, indicating a successful connection.
- Verify that all audio cables (RCA or 3.5mm) are securely connected to the correct input/output ports on both the RT5066 units and your audio devices.
- Check the volume levels on your audio source and output devices. Make sure they are not muted or set too low.
- Confirm that the RT5066 is connected to a powered speaker or amplifier, not a passive speaker, as the RT5066 is not an amplifier.
- Connection Drops or Limited Range:
- Wireless range can be affected by obstacles such as walls, metal objects, and other 2.4GHz wireless devices (like Wi-Fi routers). Try to minimize obstructions between the Transmitter and Receiver.
- Ensure the antennas on both units are securely attached and oriented for optimal signal reception.
- Incompatibility Issues:
- The RT5066 is designed for analog audio (RCA, 3.5mm). It does not support HDMI audio.
- This system uses its own 2.4GHz wireless protocol and is not compatible with Bluetooth devices.

The RT5066 ensures zero latency for synchronized audio and video.
User Tips
Based on user feedback and common questions, here are some tips for getting the most out of your 1Mii RT5066:
- Enjoy Wireless Freedom: The primary benefit of the RT5066 is to eliminate messy cables. Use it to wirelessly stream audio from your devices to any compatible audio system, providing convenience and flexibility in your setup.
- Simple Setup: The 'Plug & Play' design means setup is straightforward. Connect power, connect audio, and the units should automatically pair.
- High-Quality Audio: The RT5066 supports 24bit/192kHz HiFi stereo audio with ultra-low latency (<20ms), ensuring a clear, stable, and noise-free listening experience with perfect audio-video synchronization.
- Optimal Placement: While the device offers a long range, placing the Transmitter and Receiver in line of sight or with minimal obstructions will maximize performance and signal stability.

Enjoying excellent sound quality with the wireless setup.
Maintenance
To ensure the longevity and optimal performance of your 1Mii RT5066, please follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the units. Do not use liquid cleaners or aerosols.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Handle the units with care. Avoid dropping them or subjecting them to strong impacts.
- Power: Always use the provided power adapters to prevent damage.
Warranty and Support
1Mii products are designed for reliability and performance. We offer the following support:
- Warranty: All 1Mii products come with a 1-year warranty from our store.
- Returns: You can enjoy 7 days to return if there are any quality problems. Additionally, free returns are available within 90 days for customers in eligible countries (Russia, South Korea, France, Spain, Chile, Germany, Brazil, Israel, United States, Poland, Netherlands, Italy, Canada, Australia, United Kingdom, Saudi Arabia, UAE, Japan, Ukraine, Mexico, Belgium, Czech Republic, Portugal, Switzerland).
- Customer Service: All emails will be answered within 24 hours. For support, please contact us directly.

Warranty and Service details.





