【AT-09】 The Bluetooth module is used as the HM-10 module. 5V power supply or 3.3V power supply. 【Compact design】 Serial port power supply voltage and the same level of built-in level conversion. 【Compatible】This small Bluetooth 4.0 TTL transceiver module allows your target device to communicate with your older iPhone/iPAD, IOS 6 or Android 4.3 devices. 【Easy operation】 It is easy to use and fully encapsulated. You can set it as slave or master. You can use the AT command to set the baud rate. 【Connections】RX - Receiver with serial port of the Bluetooth module and MCU TXD.TX - Transmitter with serial port of the Bluetooth module and RXD MCU.
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