Bluetooth 5.3 Transmitter Receiver – OPT/AUX/RCA 2-in-1
Bluetooth 5.3 Transmitter Receiver – OPT/AUX/RCA 2-in-1
Bluetooth 5.3 HiFi Audio Transmitter & Receiver – 2-in-1 Wireless Adapter
Upgrade any TV, PC, stereo, or speaker system to full Bluetooth 5.3 connectivity with this versatile 2-in-1 audio adapter. Whether you want to stream wirelessly from your TV to headphones or beam audio from your phone to a classic speaker system, the S3 handles it all — no complicated setup, no extra hardware.
Why You'll Love It
- True 2-in-1 Flexibility: Switches effortlessly between Receiver (RX) and Transmitter (TX) modes — one compact device replaces two separate adapters.
- Universal Connectivity: Supports OPT Optical Fiber (Toslink), 3.5mm AUX, RCA, USB, and U-Disk input/output interfaces — compatible with virtually any audio device you own.
- Bluetooth 5.3 HiFi Audio: The latest Bluetooth 5.3 standard delivers a stable, low-latency connection with crystal-clear, high-fidelity audio quality over a 15-metre (≈49 ft) range.
- Built-in 400mAh Battery: Cordless freedom from its rechargeable battery — charges via the included USB-C cable.
- Visual Digital Display: An HD digital display shows device status at a glance, eliminating guesswork and making operation intuitive from the first use.
- Plug & Play: No drivers or apps required. Connect, switch modes, and enjoy music instantly.
- Independently Partitioned Buttons: Each function has its own dedicated button, so switching inputs or modes is always precise and deliberate.
Technical Specifications
| Model | S3 |
| Bluetooth Version | 5.3 |
| Transmission Range | Up to 15 m (approx. 49 ft) |
| Input Interfaces | Bluetooth / RCA / 3.5mm AUX / USB / OPT Optical |
| Output Interfaces | 3.5mm AUX / RCA |
| Battery Capacity | 400 mAh |
| Working Frequency | 2.4402 GHz – 2.48 GHz |
| Charging | USB-C |
What's in the Box
- 1× Bluetooth 5.3 Transmitter/Receiver Adapter (S3)
- 1× Toslink Optical Cable
- 1× 3.5mm AUX Cable
- 1× RCA Cable
- 1× USB-C Charging Cable
- 1× User Manual
Made in China.
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Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: Can I use this Bluetooth 5.3 adapter with my TV and a wireless speaker at the same time?
A: Yes! In Transmitter (TX) mode, the S3 connects to your TV via its OPT optical, RCA, or 3.5mm AUX output and streams audio wirelessly to your Bluetooth speaker or headphones — up to 15 metres away. In Receiver (RX) mode, it receives Bluetooth audio from a phone or tablet and outputs it through RCA or 3.5mm AUX to a traditional speaker or amplifier.
Q: Does the Bluetooth 5.3 transmitter receiver work without being plugged in all the time?
A: Yes. The built-in 400mAh rechargeable battery allows fully wireless operation once charged via the included USB-C cable, giving you placement flexibility without being tethered to a power outlet.
Q: Is the S3 compatible with U-Disk (USB flash drive) playback?
A: Absolutely. Simply plug in a USB flash drive (U-Disk) with your music files and the S3 will play audio directly — no phone or Bluetooth source needed. This makes it ideal for standalone audio playback in any room.
Q: What does the digital display show?
A: The high-definition digital display shows the current operating mode (TX/RX), active input/output interface, connection status, and battery level — giving you a complete at-a-glance overview with no guesswork.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.