Decoder bluetooth module Can replace for XMOS, Amanero and other USB digital interfaces. Support Bluetooth to I2S signal. All pins are fully compatible except for the 5VIN and MUTE pins. Output IIS format, MCLK is 256FS. It is suitable for retrofitting old chips such as 1541. ANT is the Bluetooth antenna, when R5 is in the M-L position, the mute signal is low level, and in the M-H position The mute signal is high when in position. LED is status indication, fast flashing means searching signal or no connection, always on after connection, The playback status is flashing slowly. Color: Yellow Material: PCB Package Contents: 1 * Bluetooth decoder Board 1 * pin Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.