HC-05 Wireless Bluetooth Receiver RF Transceiver Module Serial Port Transmitter Module
Special Features
- VCC: positive power supply?
- GND: power supply is negative?
- RXD: the receiver, Bluetooth module receives from another device sent data; normally connected to other devices transmitting end TXD?
- TXD: sending end, the Bluetooth module to send data to other devices; receiving terminal is normally connected to other devices RXD
- Brand new and high quality
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