TSA6014 is a compact size and powerful Bluetooth audio receiver. This Bluetooth music receiver connects to the Line-In or Aux input on your home audio system. You can then stream audio from your Bluetooth enabled cell phone or mp3 player to your home audio system. We have enabled the TWS function on this board. Users can also use two of this board to build a wireless stereo speaker system. This receiver board's default setting in TWS mode is mono channel output. Users can stream sound to two separate Bluetooth speakers: left channel to the left speaker and right to the right one without connecting them with any wires. You can also set it to provide two separate stereo channels (Need a programmer and cable kit). Note: TSA6014 can auto-detect the Aux in/Line in Audio input. Bluetooth Audio source has higher priority. When Bluetooth audio is paused or Bluetooth is disconnected TSA6014 will auto select the Aux in/Line in audio source. Standard working mode How to set the module into TWS mode We combined pairing buttons on this board, S button=S1+S2, M button=S1+S3. Users only need to press one button on each board to get boards paired. Two receivers work in TWS mode In TWS mode, one module as a transmitter, another one as a receiver. Features: Dimensions: 51*51*20mm Bluetooth 4.2 Apt-X supported TWS supported Stereo receiver Effective transmission distance: 10-15m Micro USB female port for powering the receiver from any USB power source(5V DC) Compatible with all Bluetooth devices that support media audio, including iPhone Documents: How to change the BT name TSA6014 Bluetooth module PSR file