This Bluetooth 4.1 audio module is a wireless audio receiver/transmitter designed to deliver high-quality stereo sound over Bluetooth. It supports hands-free functionality and music playback, making it ideal for audio applications such as wireless speakers, car kits, and headphone amplifiers. Key Features: Bluetooth Version: 4.1 (Backward compatible with 4.0, 3.0, 2.1) Profiles Supported: A2DP (Advanced Audio Distribution Profile), AVRCP, HFP, HSP Operating Voltage: Typically 3.3V – 5V Audio Output: Stereo audio via 3.5mm jack or pin headers Built-in Audio Decoder: Supports SBC codec (some variants support AAC/aptX) Communication Interface: UART / PCM / I2S (depending on model) Control Buttons: Play/Pause, Volume, Next/Previous (onboard or external) Microphone Input: Optional, for hands-free calling Range: Up to 10 meters (33 feet) Low Power Consumption: Ideal for battery-operated devices Applications: Wireless Bluetooth speakers Car Bluetooth hands-free systems DIY audio amplifiers Wireless headphone design Bluetooth-enabled audio input for microcontroller projects
