2-in-1 Bluetooth 5.1 Receiver Transmitter Adapter – 3.5mm AUX

Turn Any Speaker or Headphone Wireless with One Device

The 2-in-1 Bluetooth 5.1 Receiver & Transmitter Adapter is the ultimate compact audio solution for your home, car, or on-the-go lifestyle. Simply plug it into any 3.5mm AUX port and instantly add wireless Bluetooth connectivity to speakers, headphones, stereos, TVs, and more — no complicated setup required.

Whether you want to stream music from your phone to a non-Bluetooth speaker (RX Receiver Mode) or send audio from your TV or PC to wireless earbuds (TX Transmitter Mode), this tiny adapter does it all. With Bluetooth 5.1 technology supporting A2DP, AVRCP, HSP, and HFP profiles, you get stable, low-latency, high-quality stereo audio every time.

Made in Mainland China.

Key Features

• 🎵 2-in-1 Functionality: Easily switch between Receiver (RX) and Transmitter (TX) modes
• 📶 Bluetooth 5.1: Supports HSP, HFP, A2DP & AVRCP profiles for versatile device compatibility
• 🔋 Built-in 300mAh Battery: Rechargeable via USB (5V/1A) for portable, cord-free use
• 🎧 Universal 3.5mm AUX Jack: Works with virtually any speaker, headphone, stereo, or TV
• 📡 Internal Antenna: Sleek, snag-free design with reliable wireless range
• ⚖️ Ultra-Lightweight: Just 43g and approximately 13×2.8cm — fits in your pocket
• 🔴 LED Status Indicator: Red light flashing = TX mode active, making mode identification simple

Technical Specifications

Package Includes

• 1 × Bluetooth Music Receiver/Transmitter Adapter

Compatible Devices & Use Cases

Perfect for upgrading home hi-fi systems, car stereos, wired headphones, studio monitors, gym speakers, and more. Stream music from your smartphone, tablet, or laptop wirelessly with ease.

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For more on wireless audio standards and Bluetooth technology, visit the NIST Bluetooth Security Guide.

Frequently Asked Questions

Q: What is the difference between Receiver (RX) and Transmitter (TX) mode on this Bluetooth adapter?

A: In Receiver (RX) mode, the adapter receives Bluetooth audio from your phone or device and plays it through a connected wired speaker or headphone via the 3.5mm AUX jack. In Transmitter (TX) mode (indicated by a flashing red LED), it sends audio from a wired source (like a TV or PC) to your Bluetooth earbuds or wireless speakers. Simply toggle between the two modes to suit your setup.

Q: Why is there no sound when using the Bluetooth receiver adapter?

A: First, confirm your phone or source device has Bluetooth turned on and is paired/connected to the adapter. Next, check that your speaker or headphone is properly plugged into the AUX jack and switched to AUX audio input mode. Also ensure the adapter is fully charged or connected to power via USB.

Q: How do I connect the adapter in TX Transmitter mode?

A: Make sure the adapter has been switched to TX Transmitter mode — the red LED will flash to confirm. Then put your Bluetooth earphones or speakers into pairing mode. Note: some Bluetooth earphones may need to be reset to factory settings before they can successfully pair for the first time.

Q: Is this Bluetooth adapter compatible with car stereos?

A: This particular model does not officially support vehicle-mounted use. However, it can work with any device that has a 3.5mm AUX input, so compatibility will depend on your car stereo's input options. For best results, use it with home speakers, headphones, or hi-fi systems.