4Pcs M38 Bluetooth-compatible Audio Receiver Decoder Module with Control Buttons, Wireless Stereo Sound Board with L R Audio Output, 5V USB Power Input for DIY Speaker and Amplifier Projects

Product Description This module is a Bluetooth-compatible audio receiver and decoder board designed for wireless audio input applications. It receives audio signals over Bluetooth-compatible and outputs analog stereo sound through left and right audio channels. Onboard control buttons allow basic playback control when paired with a compatible audio source. The module operates on a 5V DC power supply and can be powered through a USB interface. Audio output can be connected to an external amplifier or powered speaker system. The compact board layout makes it suitable for integration into DIY audio projects, wireless speaker enclosures, and embedded audio systems.  Technical Specifications Module Type: Bluetooth-compatible audio receiver and decoder module Bluetooth-compatible Function: Wireless audio reception Audio Output: Stereo analog output (L / R / GND) Control Interface: Onboard push buttons Power Supply Voltage: DC 5V Power Input Type: USB power input Wireless Frequency Band: 2.4 GHz Transmission Distance: Approx. 10 m (open environment) Indicator: Status LED (connection and power state) Mounting Type: PCB module Operating Temperature: −10°C to +60°C Application: Wireless audio receiving and decoding

• This audio receiver module is designed to receive wireless audio signals via Bluetooth-compatible and output analog stereo sound. It enables external audio systems to accept wireless audio input without requiring complex digital audio decoding circuits.
• Integrated control buttons allow basic playback operations such as play, pause, and track switching when connected to compatible Bluetooth-compatible devices. This provides direct user control without additional external controllers.
• Provides left and right channel analog audio outputs, allowing direct connection to power amplifiers, active speakers, or audio processing circuits. The output supports standard line‑level audio integration.
• Operates with a 5V DC power supply and includes a USB power input interface. This allows the module to be powered by common USB adapters, power banks, or regulated DC sources.
• Compact PCB design with clearly arranged pads and connectors supports easy installation. Suitable for DIY audio systems, wireless speaker projects, audio upgrades, and embedded sound applications.