How To Swtich FSC-BT909 Bluetooth Module To AT Command Mode ?

- Nov 21, 2019-

1.When FSC-BT909 module is disconnected.

   At this status you can send ''TPMODE=0'' to enter ''AT Command''.


2. When FSC-BT909 module establish connection, then it will auto enter throughput mode.
    At this status, you can draw pin 9 to high level, then it will work at AT mode.


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For more details about FSC-BT909 module:
http://www.feasycom.net/bluetooth-module/dual-mode-bt-module-price.html