TX35
USB Bluetooth 5.2 Transmitter User Manual
Model: TX35 | Brand: Generic
1. Introduction
This manual provides detailed instructions for the operation and maintenance of your USB Bluetooth 5.2 Transmitter. This device is designed to wirelessly transmit audio from non-Bluetooth sources such as TVs, PCs, MP3 players, or airplane entertainment systems to Bluetooth-enabled headphones, speakers, or soundbars. It supports dual pairing, allowing two Bluetooth audio devices to connect simultaneously for shared listening experiences.

Figure 1.1: The USB Bluetooth 5.2 Transmitter. This compact device enables wireless audio transmission from various sources to Bluetooth headphones or speakers.
2. Product Overview and Features
The USB Bluetooth 5.2 Transmitter offers a seamless solution for converting wired audio output into a wireless Bluetooth signal. Key features include:
- Bluetooth 5.2 Technology: Ensures low power consumption and a fast, stable transmission up to 33ft (10m) in barrier-free environments.
- Dual Pairing Capability: Connects two Bluetooth headphones or speakers simultaneously, ideal for sharing audio.
- USB Audio Transmission: Directly transmits audio from non-Bluetooth PCs or PS4 game consoles via the USB port, eliminating the need for a 3.5mm audio cable or additional drivers.
- USB Power Supply: Powered directly by a USB port, ensuring continuous operation without battery concerns.
- Compact and Portable Design: Its small size (approximately 2.3 x 0.9 x 0.4 inches) makes it easy to carry and use anywhere.
- Low Latency: Designed to synchronize sound and picture, minimizing audio delays for an improved viewing and gaming experience.

Figure 2.1: The transmitter enables wireless audio for TVs and computers, allowing private listening without disturbing others.

Figure 2.2: Illustration of the integrated Bluetooth 5.2 chip, highlighting its role in stable and efficient wireless transmission.
3. Package Contents
Please verify that all items are present in the package:
- 1 x USB Bluetooth 5.2 Transmitter
- 1 x 3.5mm Audio Cable (if included with your specific model)
- 1 x User Manual (this document)
4. Setup Instructions
Follow these steps to set up your Bluetooth transmitter:
4.1 Device Components

Figure 4.1: Key components of the transmitter, including USB input, indicator lights, pair key, and 3.5mm AUX port.
- USB Input: Connects to a USB port for power and, in some cases, audio transmission.
- Bluetooth 1 Indicator (Blue LED): Indicates the connection status of the first paired Bluetooth device.
- Bluetooth 2 Indicator (Red LED): Indicates the connection status of the second paired Bluetooth device.
- AUX Indicator: (If applicable) Indicates when the 3.5mm AUX input is active.
- Pair Key: Used to initiate pairing mode and connect to Bluetooth devices.
- 3.5mm AUX Port: Connects to audio output sources via a 3.5mm audio cable.
4.2 Connecting the Transmitter
The transmitter can be connected in two primary modes:
- USB Audio Transmission Mode:
Plug the transmitter directly into a USB port on your PC, PS4, or other device that supports audio output via USB. No 3.5mm audio cable is required in this mode. The USB port will also provide power to the transmitter.

Figure 4.2: The transmitter connected to a computer's USB port for direct audio transmission.
- 3.5mm AUX Input Mode (USB for Power):
If your device (e.g., TV, MP3 player, airplane entertainment system) does not support audio output via USB, connect the transmitter's 3.5mm AUX port to the audio output jack of your source device using a 3.5mm audio cable. The transmitter still requires power, so plug its USB connector into any available USB power source (e.g., TV USB port, USB wall adapter, power bank).

Figure 4.3: Diagram illustrating how to connect the transmitter to various devices using either USB or 3.5mm AUX for audio, with USB always providing power.
4.3 Pairing with Bluetooth Devices
Once the transmitter is powered on and connected to your audio source:
- Ensure your Bluetooth headphones or speakers are in pairing mode. Refer to your audio device's manual for specific instructions on how to enter pairing mode.
- Press the Pair Key on the USB Bluetooth Transmitter. The indicator lights (Blue and/or Red) will flash, indicating it is searching for devices.
- Once successfully paired, the corresponding indicator light(s) on the transmitter will turn solid.
- To pair a second device (Dual Pairing), put the second Bluetooth headphone/speaker into pairing mode and press the Pair Key on the transmitter again. Both indicator lights should eventually turn solid.

Figure 4.4: The transmitter supports connecting two Bluetooth headphones simultaneously for shared audio experiences.
5. Operating Instructions
Once paired, the transmitter will automatically connect to the last linked devices when powered on. You can now enjoy wireless audio from your source device.
5.1 Usage Scenarios
- For TV Viewing: Connect the transmitter to your TV's USB port (for power) and 3.5mm audio output. Pair your Bluetooth headphones to enjoy TV audio privately, especially useful for late-night viewing.
- For PC/Gaming Console: Plug the transmitter into a USB port on your computer or gaming console (e.g., PS4/PS5). Audio will be transmitted wirelessly to your Bluetooth headset, enhancing your gaming or multimedia experience without cables.
- For Flight Entertainment: Use the 3.5mm audio cable to connect the transmitter to the airplane's entertainment system audio jack. Power the transmitter via a USB port (if available) or a portable power bank. Enjoy movies or music with your personal Bluetooth earbuds.
- For Gym Equipment: Connect the transmitter to the 3.5mm audio output of gym equipment (e.g., treadmill, elliptical) and power it via USB. Listen to the machine's audio through your Bluetooth headphones.

Figure 5.1: Versatile applications of the transmitter, including use in flight, for gaming, and with gym equipment.

Figure 5.2: Depiction of the two primary working modes: AUX Input Mode (left) and USB Input Mode (right).
5.2 Volume Control
Volume control is typically managed on your connected Bluetooth headphones or speakers. Some source devices (e.g., TVs) may also allow volume adjustment that affects the audio transmitted through the 3.5mm AUX port. If using USB audio transmission, volume control is usually handled by the connected PC or console.
6. Maintenance
To ensure the longevity and optimal performance of your USB Bluetooth Transmitter, follow these maintenance guidelines:
- Keep the device dry. Avoid exposure to moisture, rain, or liquids.
- Clean the device with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Store the device in a cool, dry place when not in use.
- Avoid dropping or subjecting the device to strong impacts.
- Do not attempt to disassemble or modify the device, as this will void the warranty and may cause damage.
7. Troubleshooting
If you encounter issues with your USB Bluetooth Transmitter, refer to the following common problems and solutions:
| Problem | Possible Cause / Solution |
|---|---|
| No audio / Cannot hear sound. |
|
| Cannot pair with Bluetooth device. |
|
| Audio drops out or is unstable. |
|
| Transmitter does not work with my TV. |
|
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | TX35 |
| Bluetooth Version | 5.2 |
| Hardware Interface | USB 2.0 |
| Data Link Protocol | Bluetooth |
| Color | Black |
| Item Weight | 1.13 ounces (approx. 32 grams) |
| Package Dimensions | 3.66 x 2.76 x 0.75 inches (approx. 9.3 x 7 x 1.9 cm) |
| Compatible Devices | Bluetooth Headphone, Bluetooth Speaker, Desktop, Smart TV, PS4/PS5, MP3 Player, Airplane Entertainment Systems |
| Transmission Range | Up to 33 feet (10 meters) barrier-free |

Figure 8.1: Visual representation of the wide range of compatible devices, including projectors, PCs, HDTVs, desktops, and various Bluetooth audio devices.
9. Warranty and Support
For warranty information and technical support, please refer to the manufacturer's official website or contact their customer service directly. Details are typically provided on the product packaging or the manufacturer's online resources.
Manufacturer: Bysimilai
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