Bluetooth TX-RX Audio Module GFSK (Pair)

The Bluetooth TX-RX Audio Module GFSK (Pair) is a compact and versatile Bluetooth 5.3 transceiver module designed for seamless wireless stereo audio transmission and reception. Each module can be configured as either a Bluetooth transmitter or receiver, making it ideal for DIY wireless audio projects, Bluetooth speaker conversions, or linking audio systems without cables. Supporting automatic reconnection to previously paired devices, AT command configuration via serial interface, and dual-color LED indicators for connection status, it delivers a user-friendly and reliable experience.



In transmitter mode, the module can send audio signals from sources like PCs, MP3 players, or mobile phones to Bluetooth headphones or speakers. In receiver mode, it pairs with smartphones or tablets to output Bluetooth audio to amplifiers or wired headphones. Featuring a transmission range of up to 20 meters, low distortion (-70dB), and high signal-to-noise ratio (95dB), it ensures excellent sound clarity. The module operates on 3.5–5V and includes onboard connection buttons, indicator LEDs, and optional support for external 2.4GHz antennas for improved range and performance.

Quick Spec

• Bluetooth Version: 5.3
• Operating Voltage: 3.5V–5V (3.7V typical)
• Current Consumption: 35mA (typical)
• RF Output Power: +5dBm
• Frequency Range: 2402–2480MHz
• Audio Response: 20Hz–20kHz
• Dynamic Range: 80dB
• SNR: 95dB
• THD: -70dB
• Channels: Stereo (2-channel)
• Transmission Distance: Up to 20m (open area)
• Communication Interface: UART (RX/TX), USB (sound card mode)
• Mode Selection: Transmit / Receive (via solder jumper)
• Indicator LED: Dual-color (red for TX, blue for RX)
• Dimensions: 23.5 × 15.5 mm
• Antenna Interface: Onboard IPX1 connector for external 2.4GHz antenna

Dimensions

Board Layout

Shipping List

• 2 x Bluetooth TX-RX Audio Module GFSK