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5PCS BTM308-C QCC3008 Audio Bluetooth Module (Default Firmware I2S Analog Output) for TWS APTX-LL
Specifications:
- Model number: SJR-BTM308-C
- Bluetooth chip: QCC3008 and module built-in 16M SPI FLASH
- Bluetooth version: 5.0
- Module size: 13.5mm x 21mm x 2.5mm
- Power supply voltage: 3.0-4.3V
Function:
- For SBC, AAC, APTX and APTX-LL decoding. No call function
Default Firmware:
- I2S and analog output
Button Description:
● MFB: It will be powered on when there is high level. And it will be powered off when there is low level. It will automatically enter pairing mode when it is powered on.
● PIO8: Short press to play/pause. Long press for 3 seconds to enter paring mode. Long press for 5 seconds to clear the pairing record.
● PIO1: Short press for the previous song. Long press to turn it down.
● PIO0: Short press for the next song. Long press to turn it up.
● PIO6: Amplifier control enable pin (it will output 3.3V high level when there is audio output).
● PIO8+PIO1: Long press for 1 second to enter searching TWS mode
● PIO8+PIO0: Long press for 1 second to enter the searched TWS mode
● PIO1+PIO0: Long press for 1 second to disconnect TWS
Indicator Description:
- Bluetooth is not connected: LED0 and LED1 flash alternately
- Bluetooth is connected: LED1 stays on
- Bluetooth audio playing mode: LED1 stays on
Attention:
- Active high buttons (the high level of MFB is 3.3V and the high level of PIO is 3.3V)
Package Included:
- 5 x Bluetooth Modules
